Mortise latch backset 55mm Brass | GSV-No. 3201 F
2. February 2019
Additional latch lock for 3-Point Locks complete stainless steel latch protrusion 19mm | GSV-No. 2439 FOU
2. February 2019
Additional latch lock for 3-Point Locks complete stainless steel latch protrusion 16mm | GSV-No. 2436 FOU
SKU: 2436 FOU
Standard product
The additional latch lock for 3-point locks, GSV-No. 2436 FOU, is a precisely engineered supplementary locking component designed to enhance the security and functionality of complete 3-point locking systems. It is intended for use in conjunction with a primary 3-point lock, providing an additional point of contact to ensure stable, reliable closure of doors, hatches, or panels. Manufactured entirely from stainless steel (A2), this latch lock combines high mechanical strength with superior corrosion resistance. Stainless steel A2 is particularly resistant to rust, wear, and environmental stress, making the product suitable for both indoor applications and protected outdoor environments, where durability and longevity are critical.
The lock features a pin hub, which allows precise and secure transmission of movement within the mechanism. This ensures that the latch engages accurately every time it is operated, providing consistent locking performance. The latch protrusion measures 16 mm, offering a secure engagement depth for reliable closure. This dimension guarantees that the latch firmly catches in the locking system, maintaining the integrity of the 3-point lock while preventing unintended disengagement or operational faults.
This additional latch lock is supplied without a strike plate, allowing flexible installation with existing or custom-designed strike plates. This feature facilitates integration into both new builds and retrofit projects, giving installers the freedom to adapt the lock to a wide range of applications.
With its unique identifier, GSV-No. 2436 FOU, the product can be easily referenced in technical documentation, spare part catalogs, and ordering systems. It represents a technically advanced, durable, and practical solution, specifically engineered to optimize the performance and security of 3-point locking systems.
Current general delivery dates subject to the usual reservations::
Brass:
• The general delivery time for products in brass satin chromed is currently 6-8 weeks
• The general delivery time for products in brass polished / brass polished chromed is currently 8-10 weeks
Stainless Steel:
• The general delivery time for products in stainless steel is currently 6 weeks
• The general delivery time for products in stainless steel polished / fine grind is currently 6-8 weeks
Aluminum:
• The general delivery time for products in Aluminum silver andodized is currently 6 weeks
• The general delivery time for products in Aluminum powder coated is currently 6-8 weeks
Special/project products:
No standard delivery time, as components are only made to order. In each case by individual arrangement
| Weight | N/A |
|---|---|
| HS-Code | |
| Product type | |
| Area of product installation | A-door (Fire protection), Doors industrial shipbuilding standard |
| Sales unit | |
| Product class |
Note on express dispatch | 24 delivery service Each item with a stock quantity can be dispatched within 24 hours. The surcharge for the 24h delivery service is 5%.
- Shipbuilding standard: 14mm
- 16 mm according to DOT (Deprtment of Transportation)
- 19 mm according USCG (US Coast Guard)
Our products do not contain the following chemical hazardous substances:
Asbestos
Polychlorinated biphenyls (PCBs)
Chlorofluorocarbons (CFCs)
Halons
Carbon tetrachloride
1-1-1-Trichloroethane
Hydrochlorofluorocarbons
Hydrobromofluorocarbons
Methyl bromide
Bromochloromethane
Anti-fouling systems containing organotin compounds as a biocide
Cadmium and cadmium compounds
Hexavalent chromium and hexavalent chromium compounds
Lead and lead compounds larger 3%
Mercury and mercury compounds
Polybrominated biphenyl (PBBs)
Polybrominated dephenyl ethers (PBDEs)
Polychloronaphthalenes (Cl >= 3)
Radioactive substances
Certain shortchain chlorinated paraffins
Perfluorooctane sulfonic acid (PFOS)
Brominated Flame Retardant (HBCDD)
3-point locks always consist of 1 center lock (ZM) and 2 addtional latch locks (FOU) for top and bottom. The product is being supplied without rod.
The hand of door for mortise locks is defined as:
if the door is closed and the hinges are visible on the right/left, then the door is right/left hand. The door is therefore hinged on the right/left and according by definition of DIN right/left.
Or: if you grasp the handle with your right hand and latch and deadbolt show to the left, then it is right hand. If you grasp the handle with your left hand latch and deadbolt show to the right, it is a left hand.
Rim locks
The hand of door for rim locks is defined as:
if the door is closed and the hinges are visible on the right/left, then the door is right /left hand. The door is therefore hinged on the right/left and according to the definition DIN “right/left".
In addition to the designation “left” and “right”, it is to be indicated whether the locks are intended for inward or outward opening doors.
Sliding door mortises
The hand of door for sliding door mortises is the same for right and left. Sliding rim door locks different for left and right doors.
When ordering, always indicate “left” or “right”.
| Latch
The lock latch keeps the door shut. In order to open the door, it must be retracted. |
| Type of latch design | Illustration |
| single latch |  |
| anti-vibration or three-piece latch |  |
| rolling latch adjustable |  |
| POM-latch for strike dampening |  |
| Deadbolt
The deadbolt regulates the access rights through the turning motion of the cylinder by key. The deadbolt is being driven out or retracted through the turning motion. |
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| Faceplate
The faceplate is the visible part of the lock case. The faceplate, the latch and the deadbolt are the only visible parts of a mortise. |
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Handle hub
The handle hub takes the square spindle of the handle in order to retract the latch inside the lock through the turning motion of the same. This process allows the opening of the door. The shipbuilding norm specifies a 9mm square with a 2° incline. Schwepper supplies also with 8mm square, special contour or 0° incline on request. |
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WC-/privacy hub
The WC hub takes the square spindle of the olive or thumb turn, that retracts or drives out the deadbolt from the inside - analogue to the turning motion of the cylinder. The shipbuilding norm specifies a 7mm square. Schwepper supplies also with 8mm square on request. |
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| Dimension | Illustration | |
| Backset
The backset is the distance from the front edge of the faceplate to the center of the cylinder hole respectively handle hub square. The rear backset behind the center line remains always 27mm. |
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| Distancing
The distancing is the dimension from the center of the handel hub and the center of the hole for profile cylinder / privacy (WC) / key. The industry standard in shipbuilding is 75mm. |
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| Latch protrusion
The latch protrudes according to the industrial DIN standard in shibuilding 14mm. Other technical standards for latch protrusion are: 16 mm according to DOT (Department of Transportation) 19 mm according to USCG (US Coast Guard) |
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| Type of lock | Illustration (click to download as PDF) |
| Mortise latch locks |  |
| Mortise WC or toilet door locks |  |
| Mortise locks for EURO profile cylinder |  |