Accentra VISL SL8831FL Detention Mortise Lockset – Grade 1 Security

Function Info: Latchbolt retracted by key outside, knob/lever inside. Latchbolt retracted by master keys and change keys only when deadbolt is NOT projected. Deadbolt operated by emergency (guards) key only outside. Inside knob/lever only opens door when deadbolt is in retracted position. Outside knob/lever rigid at all times. Deadlocking latchbolt. Trim mounted with fasteners outside. Furnished standard with TORX security screws. Master key system must be 7-pin.

The Accentra VISL SL8831FL (formerly Yale SL8800 Series) is the heavy-duty security version of the 8800 Detention Lock Function mortise lockset, built for openings where heavy abuse or vandalism is a concern. It is certified to ANSI/BHMA A156.13 Series 1000, Operational Grade 1, and the SL8800 with its security escutcheon also meets Security Grade 1. It carries the Virginia (VISL) lever on the SL security escutcheon.

Built for openings that are opened and closed thousands of times a year, it uses a wrought steel, zinc dichromate plated case, 3/8" solid steel (heat treated) hubs and a 3/4" throw stainless steel anti-friction latchbolt. Supplied in 630 Satin Stainless Steel, it is field reversible and ships with the door prep and installation drawings for the trim shown.

The SL security escutcheon is what sets this lock apart: heavy duty escutcheon trim that is flat against the door to resist damage and vandalism; lever attached directly to escutcheon for added security; thrubolted security head screws offer added protection. The SL8800 is furnished in 630 Satin Stainless Steel only; levers are Nickel Plated to match Stainless Steel.

Function Details: Detention Lock

• Key Outside, Lever Inside: Latchbolt retracted by key outside, knob/lever inside — entry from outside is by key; the inside lever works the latch without one, so nobody is ever held in.
• Keys Reach the Latch Only With the Deadbolt Withdrawn: Latchbolt retracted by master keys and change keys only when deadbolt is NOT projected — with the deadbolt thrown, neither a change key nor a master key will open the door.
• Deadbolt on the Guard's Key Only: Deadbolt operated by emergency (guards) key only outside — no ordinary key moves this deadbolt from outside; it answers only to the emergency key held by staff.
• Lever Works the Latch While the Deadbolt Is Withdrawn: Inside knob/lever only opens door when deadbolt is in retracted position — with the deadbolt back, the lever retracts the latch from either face; projecting the deadbolt changes that.
• The Lever Does Not Turn: Outside knob/lever rigid at all times — this lever is rigid -- a fixed handle for pushing and pulling the door; it does not rotate and it operates nothing.
• Anti-Shim Protection: Deadlocking latchbolt — a small plunger beside the latchbolt rides the strike when the door closes; with it depressed the latchbolt cannot be shimmed back with a card.
• Fastened From Outside: Trim mounted with fasteners outside — the mounting screws sit on the outside face, which is worth knowing before specifying it where that side is exposed.
• Security Screws as Standard: Furnished standard with TORX security screws — the trim is fixed with TORX security screws rather than a common driver, so it cannot be taken off with whatever is in someone's pocket.
• Requires a 7-Pin Master Key System: Master key system must be 7-pin — the keying schedule has to be built on seven pins for this function, so it is planned into the system rather than added to a six-pin one later.

Key Performance Features

• ANSI/BHMA Grade 1 Certified: Independently tested to the highest operational and security grade the standard defines, for long service life in demanding commercial and institutional openings.
• 3-Hour Fire Rating: UL and cUL listed for use on fire-rated door assemblies, so the opening stays code compliant.
• Accessible Operation: The lever is operable without tight grasping, pinching or wrist twisting, which is what ADA 404.2.7 requires of an accessible opening.
• Field Reversible: Furnished right hand and re-handed in the field, so one lock suits either door swing without a return.
• Anti-Friction Latchbolt: A stainless steel one-piece latch that closes quietly and resists the drag that wears a latch out on a high-traffic door.
• Heavy-Duty Hubs: Heat-treated solid steel through the point that takes every turn of the lever, which is where a lighter lock fails first.
• Mechanical Warranty: Backed for the long term against defects in the mechanical lock.

Technical Specifications & Compliance