Lockwood Synergy® 3578 Hold Back Deadlatches Lockwood Synergy® 3578 Hold Back Deadlatches Lockwood Synergy® 3578 Hold Back Deadlatches Suitable for heavy duty use in industrial and commercial buildings, institutions, clubs, schools, hospitals, hotels, and similar buildings. 3570 Series Cylinder Mortice Locks are made from quality materials to meet high durability and strength requirements. A deadlatching lockset for applications where latch hold- back is required such as high use doors and toilet doors. Features of the 3578 Hold Back Deadlatches LatchDeadlatch FurnitureCompatible with most Lockwood rose and plate furniture including Brass Door Furniture, Aquileart, Artefact Series II and Ovation series. Specification Case and Cover Plates High purity zinc alloy material cases and stainless steel cover plates Brass plates provided for plated finishes available in square and round end Backset 60mm standard backset Extended backsets 89 and 127mm are available on application. LatchboltsLatchbolts are 15mm, stainless steel. Deadlatching is achieved by an auxiliary stainless steel latchbolt. This auxiliary bolt retracts when the main latchbolt is withdrawn when the door is closed. DeadboltsDeadbolts are 19mm, stainless steel. SpringsHigh grade spring steel material, corrosion protected. Cylinder Retaining PinHard-drawn spring steel wire, corrosion protected. Door Thickness32mm to 50mmLocksets to suit thicker doors are available on application. Door ClearanceTo ensure correct functioning of the deadlatching mechanism and security for all locks, the clearance between the door and the frame should be 3mm. However the deadlatching will operate up to 8mm door clearance. Aluminium DoorsAluminium door accessory packs and aluminium fix locks are available upon request. Specify SP3570-419 for mounting tabs accessory pack or 3572AFSC. SecurityAll 3570 Series Cylinder Mortice Locks conform with Level S2 (Physical Security) Australian Lock Standard (AS-4145.2-1993). Level S3 (Physical Security) is available upon request. DurabilityAll 3570 Series Cylinder Mortice Locks conform with level D3 (Durability) Australian Lock Standard (AS 4145.2- 1993). Fire Rating3578 Hold-Back Deadlatches are non-fire rated.CylinderFive pin tumbler mechanism. Standard Lockwood oval shaped brass cylinders and brass barrels.Functions require the use of different cams and adaptors. Keying Standard Keying Supplied individually keyed with two keys per lock 78,000 key combinations Key blank KB2015P Restricted Special Keying Lockwood locks can be keyed to a number of controlled and/or specially keyed systems. These range from legally protected keys to protect against unauthorised duplication, which can also include specially designed key systems such as master key systems, which allow for different levels of mechanical access control. Lockwood Keying Platforms - more information Standard Finishes Chrome Plate CP Satin Chrome Brushed SC Polished Brass PB Extended CylindersExtended cylinders are available for thicker doors. RebateRebate kits to suit 13mm standard rebate are available. Electric StrikesLockwood 3570 Series Mortice Locks are compatible with most electric strikes. Refer local sales office for further details. Close Downloads 3570 Series Installation Instructions.pdf (.pdf, 1.1 MB) 3570-419 Aluminium Door Fixing Tabs Instructions.pdf (.pdf, 449 kB) 3570AF Series Routing Instructions.pdf (.pdf, 354 kB) 3578 Series Holdback Lock Installation Instructions.pdf (.pdf, 1 MB) 3P70 Series Rebate Kit Instructions.pdf (.pdf, 2 MB) Lockwood Synergy Mortice Locks Catalogue.pdf (.pdf, 5.8 MB) Synergy Series Mortice Locks Service Manual.pdf (.pdf, 17.6 MB) Close Where to buy? Find your local Lockwood stockist. Lockwood Synergy® 3540 Short Backset Mortice Deadlock23mm backset models available. Lockwood Synergy® 3574 Combination Mortice Latches60mm, 89mm or 127mm backset models available. Lockwood Synergy® 3572 Vestibule Mortice LocksAvailable in 60mm, 89mm or 127mm backset.