Lockwood 3772SS/50 Selector 3772 MkII Universal Primary Mortice Lock - 60 mm Backset with 50 mm Door Kit - Satin Stainless Steel
The Lockwood 3772SS/50 is the Selector 3772 MkII Universal Primary mortice lock supplied with the 50 mm door kit - the extended spindle and fixing components needed to fit the lock to a 50 mm thick door. It has a 60 mm backset, a stainless steel latch bolt with an auxiliary deadlatching bolt, and a robust zinc alloy case on a stainless steel chassis, finished in Satin Stainless Steel.
The Selector 3700 platform is a "universal" mortice lock: a single case is configured to a range of functions using a red/green function selector under the faceplate, along with interchangeable cams and adaptors. This build is designed for heavy-duty commercial and institutional use - offices, schools, hospitals and retail buildings - where reliable security and single-action egress are required.
This listing is for the lock body and 50 mm door kit only. A Lockwood 570-series oval cylinder and cam are not included and are ordered separately to suit your keying system. The lock is rated to AS 4145.2 for lockset durability and has been fire tested to AS 1905.1 on compliant fire door assemblies.
Estimated Warehouse Dispatch: 10-12 Business Days
Non-Returnable Item: This product cannot be returned once purchased.
Key Features
- Supplied with the 50 mm door kit - extended spindle and fixing components for 50 mm thick doors.
- 60 mm backset (standard). Other backsets are available across the 3772 MkII range.
- Stainless steel latch bolt with an auxiliary deadlatching bolt.
- Red/green function selector under the faceplate for simple in-door configuration.
- Satin Stainless Steel radius-end faceplate.
- Heavy-duty zinc alloy case on a stainless steel chassis.
- Reversible handing - suits left or right hand doors without case disassembly.
- Compatible with Lockwood rose and plate furniture ranges including Ovation, Artefact, Robert Watson and the VSR Series.
- Accepts Lockwood 570-series oval cylinders (cylinder and cam ordered separately).
- Fire tested to AS 1905.1 and rated to AS 4145.2 for lockset durability.
Fire Tested - AS 1905.1 (up to 4 hours)
The Selector 3772 mortice lock has been successfully fire tested for up to 4 hours on compliant fire door assemblies to AS 1905.1 (Part 1). Holdback function configurations (3772V-H, 3772XVH, 3772VTH) are not fire door rated. Fire performance depends on the complete doorset - confirm that hinges, strikes, seals and the door core are all compatible and certified. For a plain-English explanation of Australian fire door and lockset standards, see Chapter 11 - Australian Standards (AS 1905.1), and our guide to fire door types and certification.
The Selector 3772 mortice lock has been successfully fire tested for up to 4 hours on compliant fire door assemblies to AS 1905.1 (Part 1). Holdback function configurations (3772V-H, 3772XVH, 3772VTH) are not fire door rated. Fire performance depends on the complete doorset - confirm that hinges, strikes, seals and the door core are all compatible and certified. For a plain-English explanation of Australian fire door and lockset standards, see Chapter 11 - Australian Standards (AS 1905.1), and our guide to fire door types and certification.
What's in the Box
- 1 x Lockwood 3772SS/50 mortice lock body (60 mm backset)
- 1 x Satin Stainless Steel radius-end faceplate
- 1 x Satin Stainless Steel strike plate
- 50 mm door kit components (extended spindle and fixing screws for 50 mm doors)
- Installation instructions
Note: A Lockwood 570-series oval cylinder and its cam (X7 or V) are not included and must be ordered separately to suit your keying system.
Suitable Uses
- Commercial and institutional buildings - offices, schools, hospitals and retail facilities.
- 50 mm thick doors requiring a factory door kit for correct spindle and fixing engagement.
- Fire-rated door installations requiring a lock fire tested to AS 1905.1 on compliant assemblies.
- As a compliant primary lock on doors where a secondary lock is also fitted - see the one-penetration principle.
- Projects needing a versatile mortice lock with configurable escape and entry functions.
Available Finish Options
Satin Stainless Steel
(This Product)
STK 3772SS/50
The 3772SS/50 ships with a Satin Stainless Steel faceplate. Alternative finishes - Chrome Plate, Polished Brass and Powdercoat - are achieved with a Lockwood 3772-FINKIT finish kit (see Accessories below). Finish selection does not affect functionality, compliance, or performance.
Lockwood Selector Mortice Range - Item Code Family
Selector 3772 Function Configurations
The 3772 case is configured to the following factory functions using different cams and adaptors. These are reference configuration codes - contact Terry's for made-to-order function builds. Holdback configurations are not fire door rated.
Selector 3772 - Accessories & Spares
Full Specifications
Dimensions
3772 Mortice Lock
Manufacturer dimensional drawing for the Lockwood Selector 3772 mortice lock showing lock body dimensions, backset measurement, faceplate size, and fixing hole positions.
3772 Strike Plate
Manufacturer dimensional drawing for the Lockwood 3772 strike plate showing overall plate dimensions, latch and bolt aperture positions, and fixing hole centres.
Frequently Asked Questions
What is the "/50" in 3772SS/50, and what if my door is not 50 mm?
The /50 means the lock is supplied with the 50 mm door kit - the extended spindle and fixing components sized for a 50 mm thick door. For other thicknesses, the standard 3772SS plus the appropriate extended spindle covers doors up to 200 mm - see the 100 mm and 200 mm spindle kits.
The /50 means the lock is supplied with the 50 mm door kit - the extended spindle and fixing components sized for a 50 mm thick door. For other thicknesses, the standard 3772SS plus the appropriate extended spindle covers doors up to 200 mm - see the 100 mm and 200 mm spindle kits.
What backset does the 3772SS/50 use?
It has a 60 mm backset. If you are unsure how to measure the backset on your door, see our guide to measuring your lock backset and Chapter 02 - Measuring Your Door.
It has a 60 mm backset. If you are unsure how to measure the backset on your door, see our guide to measuring your lock backset and Chapter 02 - Measuring Your Door.
Is the 3772SS/50 suitable for fire doors?
Yes. The Selector 3772 has been fire tested to AS 1905.1 for up to 4 hours on compliant fire door assemblies. Holdback configurations (3772V-H, 3772XVH, 3772VTH) are not fire door rated. Fire performance depends on the whole doorset, so confirm all hardware is compatible. For context, see fire door types and certification and, before drilling any older door, our note on asbestos risk in apartment fire doors.
Yes. The Selector 3772 has been fire tested to AS 1905.1 for up to 4 hours on compliant fire door assemblies. Holdback configurations (3772V-H, 3772XVH, 3772VTH) are not fire door rated. Fire performance depends on the whole doorset, so confirm all hardware is compatible. For context, see fire door types and certification and, before drilling any older door, our note on asbestos risk in apartment fire doors.
Does this lock include a cylinder?
No. The 3772SS/50 is a lock body with the 50 mm door kit only. It accepts a Lockwood 570-series oval cylinder, ordered separately with the appropriate cam - an X7 cam for latching or a V cam. Confirm your keying and restricted-system requirements with Terry's before ordering the cylinder.
No. The 3772SS/50 is a lock body with the 50 mm door kit only. It accepts a Lockwood 570-series oval cylinder, ordered separately with the appropriate cam - an X7 cam for latching or a V cam. Confirm your keying and restricted-system requirements with Terry's before ordering the cylinder.
Can the 3772 be converted to a digital keypad lock?
Yes. A DX Digital Conversion Kit (3772-DXKITSC) adds a mechanical-digital codepad to the existing mortice lock, and the DX with Key Override kit (3772-DXKOKITSC) adds a lower cylinder for key override. For a fully credentialled digital lockset built on the same 3772 body, step up to the Lockwood Cortex CTX3772 digital lockset.
Yes. A DX Digital Conversion Kit (3772-DXKITSC) adds a mechanical-digital codepad to the existing mortice lock, and the DX with Key Override kit (3772-DXKOKITSC) adds a lower cylinder for key override. For a fully credentialled digital lockset built on the same 3772 body, step up to the Lockwood Cortex CTX3772 digital lockset.
Additional Information
Non-Returnable Item
This product is supplied as a made-to-order / special-order item and cannot be returned once purchased. Please confirm backset, door thickness (this build is kitted for 50 mm doors), function and finish before ordering. If you are unsure, contact Terry's and we will help you confirm the correct configuration.
This product is supplied as a made-to-order / special-order item and cannot be returned once purchased. Please confirm backset, door thickness (this build is kitted for 50 mm doors), function and finish before ordering. If you are unsure, contact Terry's and we will help you confirm the correct configuration.
Fire Door Installations
The Selector 3772 is fire tested to AS 1905.1, but a fire-rated lock is only one part of a compliant doorset - confirm hinges, strikes, seals and the door core are all rated and compatible, and remember that holdback configurations are excluded from the fire rating. For a reference list of test certificates see Fire-Rated Certification - Test Reports, and for compliance rules on apartment fire doors see what locks are actually compliant. Fire door and commercial work is a candidate for Terry's professional install - see Site Survey & Installation Services.
The Selector 3772 is fire tested to AS 1905.1, but a fire-rated lock is only one part of a compliant doorset - confirm hinges, strikes, seals and the door core are all rated and compatible, and remember that holdback configurations are excluded from the fire rating. For a reference list of test certificates see Fire-Rated Certification - Test Reports, and for compliance rules on apartment fire doors see what locks are actually compliant. Fire door and commercial work is a candidate for Terry's professional install - see Site Survey & Installation Services.
Universal Platform - Function Selector, Cams and Adaptors
The 3772 is a "universal" lock case: function is set by the red/green selector under the faceplate together with the cam and adaptor fitted at installation. The X7 cam retracts the latchbolt and operates the locking bar; the V cam operates the locking bar and retracts the latch after unlocking. MkII adaptors such as the 3770M2-ADAPTOR are not backwards compatible with MkI cases.
The 3772 is a "universal" lock case: function is set by the red/green selector under the faceplate together with the cam and adaptor fitted at installation. The X7 cam retracts the latchbolt and operates the locking bar; the V cam operates the locking bar and retracts the latch after unlocking. MkII adaptors such as the 3770M2-ADAPTOR are not backwards compatible with MkI cases.
Retrofits and Faceplate Options
When upgrading from an older mortice cut-out - for example an earlier Synergy 3572 - a Securafix retrofit faceplate can cover a wider mortice. For aluminium doors use the 3772-AFKIT, and for radiused door edges specify the 3772RSS full radius end version.
When upgrading from an older mortice cut-out - for example an earlier Synergy 3572 - a Securafix retrofit faceplate can cover a wider mortice. For aluminium doors use the 3772-AFKIT, and for radiused door edges specify the 3772RSS full radius end version.
Primary Lock and the One-Penetration Principle
The 3772 is a primary mortice lock. On fire-rated apartment and strata doors, only one penetration of the door leaf is typically permitted, so the primary lock and any secondary lock must be planned together. See our explainer on the one-penetration principle and primary locks.
The 3772 is a primary mortice lock. On fire-rated apartment and strata doors, only one penetration of the door leaf is typically permitted, so the primary lock and any secondary lock must be planned together. See our explainer on the one-penetration principle and primary locks.
Electric Strike and Access Control
The 3772 pairs with the Lockwood ES2100 monitored electric strike using the matching ES2100 faceplate kit - 3772-2100SS for timber doors or 3772AF-2100SS for aluminium - to bring the opening into an access-control or monitored system.
The 3772 pairs with the Lockwood ES2100 monitored electric strike using the matching ES2100 faceplate kit - 3772-2100SS for timber doors or 3772AF-2100SS for aluminium - to bring the opening into an access-control or monitored system.
About the Brand
Lockwood is an Allegion-owned brand and one of Australia's most widely specified lock manufacturers. The Selector 3700 series is its commercial universal mortice platform. For a brand overview, see Chapter 10 - Brand Profiles (Lockwood).
Lockwood is an Allegion-owned brand and one of Australia's most widely specified lock manufacturers. The Selector 3700 series is its commercial universal mortice platform. For a brand overview, see Chapter 10 - Brand Profiles (Lockwood).
Lockwood Warranty (Australia)
Lockwood branded products purchased new in Australia from authorised resellers are covered against defects in materials and workmanship for:
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)
Cosmetic finishes, batteries, normal wear and tear, misuse, unauthorised modification, corrosion and labour or freight costs are excluded.
This warranty operates in addition to rights available under the Australian Consumer Law.
What's in the Box - Lockwood 3772SS/50
- 1 x Lockwood 3772SS/50 mortice lock body (60 mm backset)
- 1 x Satin Stainless Steel radius-end faceplate
- 1 x Satin Stainless Steel strike plate
- 50 mm door kit components (extended spindle and fixing screws for 50 mm doors)
- Installation instructions
Note: A Lockwood 570-series oval cylinder and its cam (X7 or V) are not included and must be ordered separately to suit your keying system.
Lockwood 3772 - Dimensions
3772 Mortice Lock - lock body dimensions, 60 mm backset, faceplate size and fixing hole positions.
3772 Strike Plate - overall plate dimensions, latch and bolt aperture positions and fixing hole centres.
Lockwood Selector 3700 Series Mortice Locks - Catalogue
Lockwood Selector 3700 Series Mortice Locks Catalogue - Page 12
Lockwood Selector 3700 Series Mortice Locks Catalogue - Page 13
Lockwood Selector 3700 Series Mortice Locks Catalogue - Page 14
Lockwood Selector 3700 Series Mortice Locks Catalogue - Page 15
Lockwood Selector 3700 Series Mortice Locks Catalogue - Page 16
Lockwood Selector 3700 Series Mortice Locks Catalogue - Page 17
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.
