Lockwood 3780TSS Universal Primary Mortice Lock 23mm Backset with Latching Adaptor – Satin Stainless Steel
The Lockwood 3780TSS is a universal primary mortice lock from the Lockwood Selector 3700 Series, designed for narrow stile hinged doors with a 23mm backset. This lock is supplied with a latching adaptor and features a satin stainless steel faceplate.
The 3700 Series is a comprehensive range of cylinder mortice locks engineered for heavy duty use in industrial and commercial buildings, institutions, clubs, schools, hospitals, hotels and similar environments. These locks offer various latching functions operated by key or handle outside and turnknob, key or handle inside.
The universal primary lock configuration includes anti-lockout and holdback capabilities, with all lock settings accessible from under the faceplate for simple in-door configuration. The red/green function indicator provides clear visual confirmation of lock status.
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This product is not returnable. Please confirm lock function, backset, handing and cylinder requirements before ordering.
Designed for high traffic commercial and industrial applications.
Available Finish
Satin Stainless Steel
This product is supplied with a satin stainless steel faceplate and strike.
Key Features
- Universal primary mortice lock for narrow stile hinged doors.
- 23mm backset designed for narrow stile door applications.
- Supplied with latching adaptor for flexible installation.
- Red/green function indicator for visual lock status confirmation.
- All lock settings accessible from under the faceplate for in-door configuration.
- Anti-lockout and holdback capabilities included as standard.
- Improved cylinder functions including lock/unlock and retract latch operations.
- Reduced range of cylinder cams and turn adaptors for simplified specification.
- Satin stainless steel faceplate and strike.
- Suitable for heavy duty commercial and industrial use.
- Compatible with Lockwood cylinder systems.
- Backed by Lockwood 25 Year Mechanical Warranty.
Suitable Uses
- Narrow stile hinged doors in commercial buildings
- Industrial facilities and warehouses
- Institutional buildings including schools and hospitals
- Hotels and accommodation facilities
- Clubs and recreational facilities
- Office buildings and corporate environments
- High traffic door applications requiring heavy duty locking
- Doors requiring cylinder-operated access control
Full Specifications
Frequently Asked Questions
- What does "universal primary lock" mean?
A universal primary lock is the main locking mechanism for a door, designed to work with various cylinder and turn adaptor configurations. The "universal" designation indicates it can be configured for different latching functions during installation. - Is a latching adaptor included with this lock?
Yes. The 3780TSS is supplied with a latching adaptor included as standard. - What is the red/green function indicator?
The red/green indicator provides visual confirmation of the lock status. This allows installers and users to quickly verify the lock function and configuration without testing the mechanism. - Can the lock function be changed after installation?
Yes. All lock settings are accessible from under the faceplate, allowing for in-door configuration and function changes without removing the lock from the door. - Is this lock suitable for fire-rated doors?
Fire rating depends on the complete door assembly and the specific lock configuration. Consult the Lockwood Selector 3700 Series documentation and your fire door certifier to confirm suitability for fire-rated applications. - What is anti-lockout functionality?
Anti-lockout prevents users from accidentally locking themselves out by ensuring that certain locking functions cannot engage unless specific conditions are met (such as door closure or key operation).
Additional Information
- 23mm Backset Application:
The 23mm backset is specifically designed for narrow stile doors commonly found in shopfronts, commercial glass doors, and aluminum-framed applications where standard 60mm backset locks cannot be accommodated. - Cylinder Requirements:
This lock requires a compatible Lockwood cylinder (sold separately). Ensure the cylinder type, length, and keying requirements are specified when ordering the complete locking system. - Installation Considerations:
The 3700 Series locks are designed for professional installation. Accurate door preparation, correct strike alignment, and proper cylinder fitting are essential for reliable operation. - Function Configuration:
The ability to configure lock settings from under the faceplate means that function changes can be made on-site without removing the lock, reducing installation time and allowing for field adjustments. - Heavy Duty Construction:
The 3700 Series is engineered for high traffic commercial environments with robust internal components designed to withstand frequent operation and potential abuse. - Compatibility with Door Furniture:
This mortice lock is designed to work with Lockwood lever sets, handles, and escutcheons. Ensure door furniture is compatible with the chosen cylinder and lock configuration. - Maintenance:
Lockwood recommends periodic inspection and lubrication of mortice locks in high-use applications. Use a light machine oil on moving parts and avoid excessive lubrication which can attract dust and debris.
Lockwood branded products purchased new in Australia from authorised resellers are covered against defects in materials and workmanship for:
- Mechanical components: 25 years
- Electrical and electronic components: 2 years (excluding batteries)
Lockwood Warranty Overview
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary depending on product type, mechanical components, electrical elements, and finish category.
This overview summarises the structure of Lockwood warranty coverage. Full terms, exclusions and claim procedures are set out in the official Lockwood Warranty document.
Warranty Periods 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.
- Decorative finishes including 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 will naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where cleaning and maintenance have not been followed.
What the Warranty Covers
- Defects in material and workmanship during the applicable warranty period.
- Assessment by ASSA ABLOY to determine repair, replacement with the same or closest equivalent product, or refund of purchase price.
Common 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.
Warranty Claim Process
- Retain proof of original purchase.
- Return the product through the original place of purchase where applicable.
- If claiming directly, obtain a case number before returning goods.
- Products must be securely packed and clearly identified.
- Warranty assessment determines repair, replacement or refund.
Australian Consumer Law
Lockwood warranties operate in addition to rights available under the Australian Consumer Law. Goods come with guarantees that cannot be excluded. Customers may be entitled to a replacement or refund for a major failure and compensation for reasonably foreseeable loss or damage.
Where a product fails to meet acceptable quality standards and the failure does not amount to a major failure, the customer is entitled to repair or replacement.
