Borg Mech-Digital Back-to-Back Adaptor Kit - Lockwood 3572 Mortice Lock - Suits 2000 and 4000 Series Keypads
The BL3572KITBTB is a back-to-back (BTB) adaptor kit from Borg for the Lockwood 3572 mortice lock. It lets Borg mechanical digital keypads work a Lockwood 3572 that is already in the door, with a keypad on each side, so a code is needed to open the door from either side. The kit suits Borg 2000 and 4000 Series keypads: order two, one for each face of the door, from Keypads for Smartlocks - see the keypads it takes.
It sits with the other Borg conversion kits in Scar & Adaptor Plates. New to battery-free keypad locks? Start with what a mechanical digital lock is, then how the Lockwood, Borg and Carbine ranges compare.
Estimated Dispatch
Usually ships same day if ordered before 11am AEST (excludes weekends and Queensland public holidays).
Usually ships same day if ordered before 11am AEST (excludes weekends and Queensland public holidays).
Key Features
- Back-to-back conversion for the Lockwood 3572 mortice lock - a Borg keypad on each side of the door (what a double-sided keypad set-up is).
- Works the Lockwood 3572 already in the door, so the mortice lock stays in service (the retrofit ecosystem).
- Takes Borg 2000 and 4000 Series keypads - two per door, such as the BL2000KSCNEW knob keypad or the BL2301KSC lever keypad (the keypads it takes).
- A code to get out as well as in - not for a door in a required exit path (no keypad on the egress side).
- Stainless steel, like the other Borg adaptor plates in Scar & Adaptor Plates.
- One of a matched set: the single-keypad BL3572KIT, the Lockwood 3582 back-to-back BL3582KITBTB and the Borg 5000 Series back-to-back BL50013572KBTB (item code family).
Suitable Uses
- Doors with a Lockwood 3572 mortice lock that need a code on both sides - identify the lock with existing door hardware in Measuring Your Door before ordering.
- Retrofits that keep a sound Lockwood 3572 in service rather than replacing the lock - see how bored cylindrical and mortice door prep differ.
- Controlling who leaves as well as who enters, on a door that is not a required exit path - double-sided keypad set-ups and doors in required exit paths.
- Pairing with Borg 2000 and 4000 Series keypad-only units from Keypads for Smartlocks, chosen with internal, external and marine grade options in mind - the complete Borg locks are in Digital Mechanical Locks.
Available Finish Options
Stainless Steel
(This Product)
STK BL3572KITBTB
Finish selection does not affect functionality, compliance, or performance.
Borg Adaptor Kits and Scar Plates - Item Code Family
This product is the bold row. Browse scar and adaptor plates in the Scar & Adaptor Plates category.
What This Kit Converts and the Keypads It Takes
This kit is for the Lockwood 3572 mortice lock and suits Borg 2000 and 4000 Series keypads - a back-to-back door takes two, one for each side. If you plan to pair two different keypad models, or to use an Easicode Pro (ECP) keypad, ask us to confirm the pair before you order.
Another route for a Lockwood 3572 door:
Accessories and Spares
Which spindle a door needs depends on its thickness - measure the door and ask us to confirm before ordering. The extended spindle is a special order: read its special-order notice.
Full Specifications
Frequently Asked Questions
How many keypads does this kit need?
Two. Back-to-back means a Borg keypad on each side of the door, both working the one Lockwood 3572 mortice lock, so order two Borg 2000 or 4000 Series keypads - for example a pair of BL2000KSCNEW knob keypads. The keypads we stock for it are listed under What This Kit Converts and the Keypads It Takes, and our double-sided lock guide explains the set-up.
Two. Back-to-back means a Borg keypad on each side of the door, both working the one Lockwood 3572 mortice lock, so order two Borg 2000 or 4000 Series keypads - for example a pair of BL2000KSCNEW knob keypads. The keypads we stock for it are listed under What This Kit Converts and the Keypads It Takes, and our double-sided lock guide explains the set-up.
Will people need a code to get out?
Yes. With a keypad on each side, a code is needed to leave as well as to enter, so a back-to-back set-up is not for a door in a required exit path - see why an exit path needs no keypad on the egress side and doors in required exit paths. If only one side needs a keypad, compare the single-keypad BL3572KIT.
Yes. With a keypad on each side, a code is needed to leave as well as to enter, so a back-to-back set-up is not for a door in a required exit path - see why an exit path needs no keypad on the egress side and doors in required exit paths. If only one side needs a keypad, compare the single-keypad BL3572KIT.
Which back-to-back kit suits my lock and keypads?
Match both the Lockwood lock and the Borg keypad series. This kit is for a Lockwood 3572 with Borg 2000 or 4000 Series keypads. A Lockwood 3582 with 2000 or 4000 Series keypads takes BL3582KITBTB, and a Lockwood 3572 with Borg 5000 Series keypads takes BL50013572KBTB. Not sure which lock is fitted? Start with identifying your existing door hardware.
Match both the Lockwood lock and the Borg keypad series. This kit is for a Lockwood 3572 with Borg 2000 or 4000 Series keypads. A Lockwood 3582 with 2000 or 4000 Series keypads takes BL3582KITBTB, and a Lockwood 3572 with Borg 5000 Series keypads takes BL50013572KBTB. Not sure which lock is fitted? Start with identifying your existing door hardware.
Will it suit my door thickness?
Measure the door first, then ask us to confirm - we will match the spindle to the door. The spare spindles for Borg mortice lock conversions are the standard BLMORTSPDL and the extended BLMORTSPDL120 for thicker doors, and how to measure door thickness is in Measuring Your Door.
Measure the door first, then ask us to confirm - we will match the spindle to the door. The spare spindles for Borg mortice lock conversions are the standard BLMORTSPDL and the extended BLMORTSPDL120 for thicker doors, and how to measure door thickness is in Measuring Your Door.
Can I have key override with this kit?
The key override conversion for the Lockwood 3572 in the Borg 2000 and 4000 Series range is a separate plate, 09351550 (BL3572KOR), sold as the 3572 conversion with key override. Ask us before planning key override into a back-to-back set-up; why key override can be important covers when it matters.
The key override conversion for the Lockwood 3572 in the Borg 2000 and 4000 Series range is a separate plate, 09351550 (BL3572KOR), sold as the 3572 conversion with key override. Ask us before planning key override into a back-to-back set-up; why key override can be important covers when it matters.
Additional Information
- Convert or replace: an adaptor kit keeps a sound Lockwood lock working and changes how it is opened - the thinking behind the retrofit ecosystem, and why spare parts support matters for the years after fitting.
- Code changes belong to the keypads: Easicode Pro keypads such as the BL2401KSCECP change code on the door (the Easicode Pro method), while other Borg keypads change On The Bench (standard Borg chambers). Anyone expecting to re-code, even once a year, should choose ECP keypads - what ECP means.
- Identify and measure first: confirm the lock is a Lockwood 3572 and measure the door before ordering - existing hardware, door thickness and measuring your lock backset (the Lockwood 3572 we list is a 60mm backset lock) - and ask us if anything is unclear.
- Fitting help: when DIY is appropriate sets out the line; if you would rather have it fitted, see advice and installation or professional supply and installation on the Gold Coast.
- The complete-lock route: Lockwood's own 3572DX is a complete DX keypad mortice lock with one keypad outside and free exit inside - see Lockwood DX on commercial door hardware and Lockwood vs Borg vs Carbine if you would rather replace the lock than convert it.
Warranty
Borg Locks Warranty - 12 Months (Australia)
All Borg locks are warranted against mechanical defects in materials and workmanship under normal use and service for a minimum of 12 months from date of sale. The warranty does not cover damage arising from misuse, vandalism, or improper installation. The lock must not be dismantled - doing so will invalidate the warranty. Proof of purchase required for all claims.
All Borg locks are warranted against mechanical defects in materials and workmanship under normal use and service for a minimum of 12 months from date of sale. The warranty does not cover damage arising from misuse, vandalism, or improper installation. The lock must not be dismantled - doing so will invalidate the warranty. Proof of purchase required for all claims.
Purchased through Terry's Tradies Pty Ltd or one of its associated trading names? Contact us first - we will manage your warranty claim with the Australian distributor (LSC) on your behalf. This warranty operates alongside your rights under the Australian Consumer Law.
Download PDF Resources
Borg 2000 Series Accessories (PDF)
Borg's one-page BL2000 Series accessories sheet (LSC) - covers the single-keypad BL3572KIT and the rest of the 2000 Series conversions. The back-to-back kit itself is in the BDS catalogue.
Borg's one-page BL2000 Series accessories sheet (LSC) - covers the single-keypad BL3572KIT and the rest of the 2000 Series conversions. The back-to-back kit itself is in the BDS catalogue.
BDS Security Products Catalogue 2024/2025 - Borg Adapter Plates (PDF)
The BDS security products catalogue (LSC) - page 43 covers the Borg 2000 & 5000 Series adapter plates, including BL3572KITBTB in stainless steel with its plate dimensions. The mortice lock spindle for Borg 2000 and 5000 Series conversions is on page 45.
The BDS security products catalogue (LSC) - page 43 covers the Borg 2000 & 5000 Series adapter plates, including BL3572KITBTB in stainless steel with its plate dimensions. The mortice lock spindle for Borg 2000 and 5000 Series conversions is on page 45.
Borg BL2000 Series Product Leaflet (PDF)
Borg's Light Duty 2000 Series leaflet - includes a dimensioned drawing of the 2000 Series keypad.
Borg's Light Duty 2000 Series leaflet - includes a dimensioned drawing of the 2000 Series keypad.
Borg BL4400 Series Brochure (PDF)
Borg's 4400 Series brochure - includes a dimensioned drawing of the 4400 Series keypad.
Borg's 4400 Series brochure - includes a dimensioned drawing of the 4400 Series keypad.
Borg BL3572KITBTB - FAQ, Fitting and Buying Guide
Buying and fitting answers for putting a Borg keypad on each side of a Lockwood 3572 mortice lock. For the wider picture, see Mechanical Digital Locks (Chapter 16) and our Smart Lock FAQ (Chapter 13).
Choosing the Keypads
Can I use knob keypads or lever keypads?
Both styles are on the list for this kit. Knob keypads: BL2000KSCNEW (satin chrome), BL2000KPB (polished brass), BL2201KSCECP (Easicode Pro), BL2600KMG (external grade) and BL2601KMGPRO (Marine Grade Pro). Lever keypads: BL2301KSC (satin chrome), BL2401KSCECP (Easicode Pro) and the 4000 Series BL4401KMGPRO and BL4401KMGPROECP. Ask us to confirm your pair before ordering, particularly if the two sides will not match - you can browse keypads in Keypads for Smartlocks.
Both styles are on the list for this kit. Knob keypads: BL2000KSCNEW (satin chrome), BL2000KPB (polished brass), BL2201KSCECP (Easicode Pro), BL2600KMG (external grade) and BL2601KMGPRO (Marine Grade Pro). Lever keypads: BL2301KSC (satin chrome), BL2401KSCECP (Easicode Pro) and the 4000 Series BL4401KMGPRO and BL4401KMGPROECP. Ask us to confirm your pair before ordering, particularly if the two sides will not match - you can browse keypads in Keypads for Smartlocks.
Which keypad should go on a side that faces the weather?
Choose each keypad for where it sits. For a weather-facing side, look at the external grade BL2600KMG or the Marine Grade Pro keypads BL2601KMGPRO, BL4401KMGPRO and BL4401KMGPROECP, and check each keypad's own page for where it may be used. Internal, external and marine grade options and do you always need MG Pro? explain the choice.
Choose each keypad for where it sits. For a weather-facing side, look at the external grade BL2600KMG or the Marine Grade Pro keypads BL2601KMGPRO, BL4401KMGPRO and BL4401KMGPROECP, and check each keypad's own page for where it may be used. Internal, external and marine grade options and do you always need MG Pro? explain the choice.
Should I choose Easicode Pro (ECP) keypads?
If you expect to change the code, yes. ECP keypads such as BL2201KSCECP, BL2401KSCECP and BL4401KMGPROECP change code on the door (Borg Easicode Pro on-door change), while other Borg keypads are re-coded On The Bench (the bench method). A back-to-back door carries two keypads, so anyone who expects to re-code - even yearly - is better served by ECP; do you always need ECP? weighs it up.
If you expect to change the code, yes. ECP keypads such as BL2201KSCECP, BL2401KSCECP and BL4401KMGPROECP change code on the door (Borg Easicode Pro on-door change), while other Borg keypads are re-coded On The Bench (the bench method). A back-to-back door carries two keypads, so anyone who expects to re-code - even yearly - is better served by ECP; do you always need ECP? weighs it up.
Your Lock, Your Door and the Alternatives
How do I check my lock is a Lockwood 3572?
Identify the mortice lock before you order. Existing door hardware in Measuring Your Door walks through the common set-ups, including mortice lever and escutcheon and mortice with longplate furniture, and the lock itself is listed as the Lockwood 3572 Universal Primary Mortice Lock. If the door has a Lockwood 3582 instead, the back-to-back kit is BL3582KITBTB. Still unsure? Ask for a qualified locksmith recommendation.
Identify the mortice lock before you order. Existing door hardware in Measuring Your Door walks through the common set-ups, including mortice lever and escutcheon and mortice with longplate furniture, and the lock itself is listed as the Lockwood 3572 Universal Primary Mortice Lock. If the door has a Lockwood 3582 instead, the back-to-back kit is BL3582KITBTB. Still unsure? Ask for a qualified locksmith recommendation.
Do I have to replace my Lockwood 3572?
No - the kit works the Lockwood 3572 already in the door, which is the point of an adaptor kit (the retrofit ecosystem). If the lock body itself needs replacing, we list the Lockwood 3572 mortice lock, which both this kit and the single-keypad BL3572KIT are made for; if you would rather fit a complete keypad lock instead, compare Lockwood's 3572DX.
No - the kit works the Lockwood 3572 already in the door, which is the point of an adaptor kit (the retrofit ecosystem). If the lock body itself needs replacing, we list the Lockwood 3572 mortice lock, which both this kit and the single-keypad BL3572KIT are made for; if you would rather fit a complete keypad lock instead, compare Lockwood's 3572DX.
How does this kit compare with Lockwood's own 3572DX?
They take different approaches. The 3572DX is a complete Lockwood DX keypad mortice lock with one keypad outside and free exit inside, and the 3572DXKO adds key override; this kit keeps your existing Lockwood 3572 and puts a Borg keypad on each side. Lockwood DX on commercial door hardware and which brand to choose cover the trade-offs.
They take different approaches. The 3572DX is a complete Lockwood DX keypad mortice lock with one keypad outside and free exit inside, and the 3572DXKO adds key override; this kit keeps your existing Lockwood 3572 and puts a Borg keypad on each side. Lockwood DX on commercial door hardware and which brand to choose cover the trade-offs.
Fitting and Everyday Use
Can I fit it myself?
That depends on your experience with mortice lock hardware. Our guide to when DIY is appropriate sets out the line, and wrong spindle position is a common mistake to avoid. If you would rather not, see advice and installation, or book a free site survey or professional supply and installation on the Gold Coast.
That depends on your experience with mortice lock hardware. Our guide to when DIY is appropriate sets out the line, and wrong spindle position is a common mistake to avoid. If you would rather not, see advice and installation, or book a free site survey or professional supply and installation on the Gold Coast.
Does it need batteries or power?
No. Borg keypads are mechanical digital - the code is set in a mechanical coding chamber, with no batteries or wiring - and the kit itself is stainless steel hardware. How a mechanical digital lock works explains the mechanism, and mechanical digital lock vs smart lock compares the two if you want app or remote access instead.
No. Borg keypads are mechanical digital - the code is set in a mechanical coding chamber, with no batteries or wiring - and the kit itself is stainless steel hardware. How a mechanical digital lock works explains the mechanism, and mechanical digital lock vs smart lock compares the two if you want app or remote access instead.
What happens if someone forgets the code?
Keep a record of the code: knowing the current code is the first rule of any code change, and when to call a locksmith covers the cases that need help. The key override conversion for the Lockwood 3572 is the separate 09351550 plate - ask us before planning it into a back-to-back set-up.
Keep a record of the code: knowing the current code is the first rule of any code change, and when to call a locksmith covers the cases that need help. The key override conversion for the Lockwood 3572 is the separate 09351550 plate - ask us before planning it into a back-to-back set-up.
Related Products, Guides and Chapters
Borg adaptor kits: BL3572KIT · BL3582KITBTB · BL50013572KBTB · BL3582KIT · BL002KIT · BL50013572K · BL50013582K
Key override and scar plates: 09351550 (BL3572KOR) · 09351500 (BL3582KOR) · BLSPLT · BLSPLTMB
Borg 2000 and 4000 Series keypads: BL2000KSCNEW · BL2000KPB · BL2201KSCECP · BL2301KSC · BL2401KSCECP · BL2600KMG · BL2601KMGPRO · BL4401KMGPRO · BL4401KMGPROECP · BL2000SC complete lock
Lockwood: Lockwood 3572 Mortice Lock · Lockwood 3572DX · Lockwood 3572DXKO · Lockwood range
BDS spindles: BLMORTSPDL · BLMORTSPDL120 · Mortice adaptor kits the spindle suits · BDS range
Buyer's Guide chapters: Chapter 16: What Is a Mech-Digi Lock · Chapter 16: The Three Ranges · Chapter 16: Changing the Code · Chapter 02: Existing Door Hardware · Chapter 02: Door Thickness · Chapter 10: Borg Profile · Chapter 10: Lockwood Profile · Chapter 12: When DIY Is Appropriate · All Buyer's Guide chapters
Guides: What Is a Double-Sided Lock · Not for Required Exit Paths · Doors in Required Exit Paths · Borg Easicode Pro Code Change · Standard Borg Chambers · What ECP Means · The Retrofit Ecosystem · Lockwood DX on Commercial Doors · Lockwood vs Borg vs Carbine · How a Mech-Digi Lock Works
Categories and services: Scar & Adaptor Plates · Keypads for Smartlocks · Digital Mechanical Locks · Smart Lock Accessories · Advice and Installation · Qualified Locksmith Recommendation
PDF Files - BL3572KITBTB
Borg 2000 Series Accessories (PDF)
Borg's one-page BL2000 Series accessories sheet (LSC) - covers the single-keypad BL3572KIT and the rest of the 2000 Series conversions. The back-to-back kit itself is in the BDS catalogue.
Borg's one-page BL2000 Series accessories sheet (LSC) - covers the single-keypad BL3572KIT and the rest of the 2000 Series conversions. The back-to-back kit itself is in the BDS catalogue.
BDS Security Products Catalogue 2024/2025 - Borg Adapter Plates (PDF)
The BDS security products catalogue (LSC) - page 43 covers the Borg 2000 & 5000 Series adapter plates, including BL3572KITBTB in stainless steel with its plate dimensions. The mortice lock spindle for Borg 2000 and 5000 Series conversions is on page 45.
The BDS security products catalogue (LSC) - page 43 covers the Borg 2000 & 5000 Series adapter plates, including BL3572KITBTB in stainless steel with its plate dimensions. The mortice lock spindle for Borg 2000 and 5000 Series conversions is on page 45.
Borg BL2000 Series Product Leaflet (PDF)
Borg's Light Duty 2000 Series leaflet - includes a dimensioned drawing of the 2000 Series keypad.
Borg's Light Duty 2000 Series leaflet - includes a dimensioned drawing of the 2000 Series keypad.
Borg BL4400 Series Brochure (PDF)
Borg's 4400 Series brochure - includes a dimensioned drawing of the 4400 Series keypad.
Borg's 4400 Series brochure - includes a dimensioned drawing of the 4400 Series keypad.
Borg Locks Warranty
Borg products sold in Australia are covered against mechanical defects in materials and workmanship under normal use and service. Warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries.
Warranty Summary
What the Warranty Covers
- Mechanical defects in materials and workmanship
- Defects arising under normal use and service conditions
- Repair or replacement of defective units at the discretion of the Australian distributor (LSC)
What the Warranty Does Not Cover
- Damage arising from misuse, vandalism, or abuse
- Damage resulting from improper installation
- Locks that have been dismantled - dismantling invalidates the warranty
- Normal wear and tear
- Cosmetic damage not affecting function
How to Make a Claim
For full returns and warranty claim procedures, visit our Returns & Warranty page - this is kept up to date and is the authoritative reference for current claim steps.
- Contact Terry's Tradies Pty Ltd first if you purchased through us or one of its associated trading names - we will assess the issue and manage the warranty process with LSC on your behalf. You do not need to contact LSC or Borg Locks UK directly.
- Have your proof of purchase ready (receipt or order confirmation).
- Warranty claims for Borg products in Australia are processed through LSC, the authorised Australian importer and distributor. Where an item is returned to LSC, freight charges must be prepaid and the item returned within the warranty period.
- If LSC finds the returned item to be defective, it will be repaired or replaced, and a detailed assessment report is provided to the customer after examination.
Australian Consumer Law
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. The Borg manufacturer warranty above operates alongside - and does not limit - these statutory rights.
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. The Borg manufacturer warranty above operates alongside - and does not limit - these statutory rights.
