Lockwood 4772TSS — MkII Universal Primary Lock 89 mm Backset with Locking Adaptor Satin Stainless
The Lockwood 4772TSS is a Selector® 4770 Series MkII universal primary mortice lock with an 89 mm backset. Supplied with a locking adaptor and finished in Satin Stainless Steel (SS), this heavy-duty mortice lock is built for use in commercial, institutional, and industrial buildings. It provides secure deadlatching, versatile in-door function configuration, and is suitable for timber and aluminium door installations.
Estimated Warehouse Dispatch: 11 Days
Non-Returnable Item: This product cannot be returned once purchased
Key Features
- 89 mm backset mortice lock for commercial and institutional applications.
- Supplied with locking adaptor for versatile function configuration.
- Satin Stainless Steel finish with radius end faceplate.
- Durable zinc alloy case with stainless steel chassis for heavy-duty service.
- Deadlatching bolt with auxiliary latch for secure operation.
- Compatible with Lockwood 570 oval cylinders and restricted/master keying.
- Retrofit compatible with Synergy® case sizes for upgrade projects.
Fire Rated
- Tested up to 4 hours on compliant fire door assemblies (AS 1905.1:2005).
Specifications
- Item Code: 4772TSS
- Function: Universal primary mortice lock with locking adaptor (MkII platform).
- Backset: 89 mm.
- Door Thickness: 32–50 mm standard; extension kits available for 75–200 mm.
- Bolt: 15 mm stainless steel latchbolt with auxiliary deadlatch.
- Case: Zinc alloy with stainless steel chassis.
- Finish: Satin Stainless Steel (SS).
- Handing: Reversible without case disassembly.
- Compliance: AS4145.2 (Durability D8, Security S7); AS1905.1 (Fire Doors).
What's In The Box
- 1 × Lockwood 4772TSS mortice lock body (89 mm backset)
- 1 × Satin Stainless Steel faceplate
- 1 × Satin Stainless Steel strike plate
- Locking adaptor
- Fixing screws
- Installation instructions
Suitable Uses
- Commercial aluminium or timber door applications requiring an 89 mm backset.
- High-traffic institutional and public buildings such as hospitals, schools, and offices.
- Fire-rated doors requiring compliant mortice hardware.
Selector® 4772 MkII Escape Locks — Item Code Family (89 mm Backset)
Selector® 4772 MkII — Accessories & Spares
Warranty
- Lockwood 25 Year Mechanical Warranty covers mechanical components and workmanship under normal use and correct installation.
- Electronic and electrical components are covered for 3 years (PADDE & electric mortice locks 5 years, batteries excluded).
- Keys are covered for 12 months.
- Finish warranty varies by finish type and exposure — e.g. Everbrass 25 years; Stainless/Chrome/Anodised 10 years; PVD/VIVID 10 years; Symmetry range 5 years; decorative finishes such as bronze, antique and powdercoat 2 years (natural brass ageing excluded).
- Warranty excludes misuse, improper installation, modification, or failure to maintain as specified.
Download PDF Resources
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Lockwood Selector 3700 Series Mortice Locks Catalogue |
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Lockwood Selector 3700 Series Mortice Locks Service Manual |
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Lockwood 25 Year Mechanical Warranty (Conditions Apply) |
Lockwood Warranty
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary by product type, with separate cover for mechanical components, electrical and electronic parts, keys, and finishes.
The summary below sets out the standard warranty structure. All warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries. Full terms and exclusions are set out in the official Lockwood warranty document linked at the base of this page.
Warranty Summary
Finish Coverage Guide
- Everbrass finishes: up to 25 years against corrosion, tarnishing and discolouration.
- Stainless steel, polished stainless steel, chrome plating and anodised finishes: typically up to 10 years.
- PVD and VIVID finishes: typically up to 10 years.
- Symmetry range finishes: typically up to 5 years.
- Decorative finishes (Antique Copper, Architectural Bronze, Oil Rubbed Bronze, Aged Brass, Polished Brass, Satin Brass and related variants): typically up to 2 years against corrosion.
- Unlacquered brass finishes naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where the required cleaning and maintenance have not been followed.
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 and its associated websites, trading names, and subsidiaries with your proof of original purchase.
- Keep the product securely packed and clearly identified, ready for assessment.
- Where a claim is escalated to the manufacturer, ASSA ABLOY may issue a case number before goods are returned.
- ASSA ABLOY assesses the claim and determines repair, replacement with the same or closest equivalent product, or refund of the purchase price.
Exclusions
- Normal wear and tear.
- Misuse, abuse, accidental damage or use outside published specifications.
- Improper maintenance or failure to follow care instructions.
- Unauthorised modification, repair or use of non-genuine parts.
- Exposure to corrosive environments including coastal air, salt spray, chemicals or pollution.
- Removal, refitment or associated labour charges.
- Products not originally sold in Australia through authorised channels.
Australian Consumer Law
These manufacturer warranties apply in addition to your rights under the Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage. Where a failure does not amount to a major failure, you are entitled to have the goods repaired or replaced.
These manufacturer warranties apply in addition to your rights under the Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage. Where a failure does not amount to a major failure, you are entitled to have the goods repaired or replaced.
