Tell 9100A Heavy Duty Mortise Lock Exit Device - 48" - US32D

About this item

The Tell 9100A is a 48-inch Grade 1 heavy-duty mortise lock exit device in US32D Satin Stainless Steel, designed for high-security commercial doors where a fully integrated mortise lockcase and panic pushpad are required in a single assembly. If you're searching for "tell lock," "mortise lock exit device," "mortise panic exit device," "f9100," or cross-referencing the catalog designation "90009100 ul listed mortise lock," this is the product.

What Makes a Mortise Lock Exit Device Different from a Rim Exit Device

A standard rim exit device latches with a surface-mounted latch bolt that strikes a rim strike on the door frame. A mortise lock exit device integrates a full mortise lockcase into the exit device body. The lockcase is recessed into the door stile itself, just like a standalone mortise lock. This gives the Tell 9100A the mechanical security of a commercial mortise lockset combined with the panic egress function of a pushpad exit device in a single unit.

The mortise lockcase on the 9100A provides a full mortise-style latch and deadbolt engagement into the door frame strike, which is structurally stronger than a surface latch-only connection. For high-security entrances, where access from the outside must be strictly controlled while still allowing people to exit quickly and safely from the inside during an emergency, a mortise lock exit device is the ideal choice. It provides strong security on entry without compromising safe and easy egress when it’s needed most.

Tell 9100A vs 9100B: The Size Distinction

The Tell 9100 Series has two size variants. The 9100A is the 48-inch device, sized for doors up to 48" wide. The 9100B is the 36-inch device for standard 36" doors. The 9100A uses a longer pushpad assembly that covers wider hollow metal door stiles. Specify 9100A for 48-inch openings. Specify 9100B for 36-inch openings.

Equivalent Specification Cross-Reference

The Tell 9100 is positioned as a high-security equivalent to the leading mortise exit device lines. It is specified as a direct equal to the Von Duprin 99 Series, Sargent 8800 Series, Hager 4500 Series, Cal-Royal 9800, and Design 1000R. Architects and specifiers who have these products called out in a hardware schedule can substitute the Tell 9100 at equal performance and specification compliance.

Mortise Lockcase and Latch Specifications

The lockcase is steel, plated, measuring 6-1/16" x 3-15/16" x 29/32" (154mm x 100mm x 23mm). The anti-friction latchbolt is stainless steel with a 3/4" (19mm) throw. Anti-friction latchbolts use a spring-loaded insert that reduces the closing force required to engage the latch, which matters on high-traffic doors where door closers are set near their minimum closing force. The device is UL and ULC listed for panic hardware compliance.

US32D Finish and Door Compatibility

US32D designates Satin Stainless Steel, the standard architectural finish for stainless steel hardware. It's corrosion resistant, maintains its appearance in high-humidity and exterior-adjacent applications, and doesn't require the same maintenance as painted or plated finishes. The Tell 9100A fits hollow metal and wood doors from 1-3/4" (44mm) to 2-1/4" (57mm) thick. It is a handed device. Specify Right Hand Reverse (RHR) or Left Hand Reverse (LHR) when ordering. The device installs on doors prepared for ANSI standard mortise prep.