Adams Rite 8420MLR-27248 Mortise Exit Device

Adams Rite 8420MLR-27248 Mortise Exit Device offers a Grade 1 life safety solution designed specifically for narrow stile aluminum applications. This device features motor latch retraction and electric dogging, ensuring reliable performance in commercial settings. The clean, unobtrusive design is not only aesthetically pleasing but also remarkably easy to install. One of the standout features of the 8420MLR is the patented "Starwheel" bolt, which effectively interlocks the door to the frame, providing enhanced security. As the door closes, the interlocking noseguard and bolt engage, ensuring a tight seal. When the pushbar is depressed, the deadlocking slide retracts, allowing for smooth operation. Constructed from durable extruded aluminum with a dark bronze anodized finish, this exit device suits standard door openings of up to 48 inches and thicknesses from 1-3/4 inches to 2-1/4 inches. The non-handed design allows for versatile installation, while the adjustable pushbar height accommodates doors up to 8 feet. Optional tall door kits are available for taller installations. With standard self-tapping screws for fast installation and a five-year limited warranty, the Adams Rite 8420MLR-27248 Mortise Exit Device is a reliable choice for enhancing safety and accessibility in commercial spaces.

Mortise Exit Device

Grade 1 Life Safety Narrow Stile Mortise Exit Device, Motor Latch Retraction, Electric Dogging, Narrow Stile Pushpad , For Aluminum Applications, 48 In., 31/32 In. Backset, Dark Bronze Anodized Aluminum Finish

The 8400 Series is designed for narrow stile aluminum applications that require a life-safety exit device with mortise locking solution.

Clean, unobtrusive design. Easy to install.

Patented "Starwheel" bolt interlocks door to frame, which is a unique feature for exit devices. The "Starwheel" bolt comes into play when the door closes. The interlocking noseguard and starwheel bolt close around the strike. The deadlocking slide springs over, locking the starwheel bolt to the strike. When the pushbar is depressed, the deadlocking slide moves back, allowing the door to unlock from the strike. 

• Materials: Pushbar made of extruded aluminum, clad or anodized in a variety of finishes.
• Handing: Device is non-handed. Lever Entry Trim is field reversible.
• Pushbar Length: Standard sizes: dimensioned for 30”, 36”, 42”, and 48” openings. Standard width bars can be field cut to the next smallest opening width.
• Bar Height: Standard model adjusts from 30” to 44”.
• Door Height: Standard model fits up to 8 ft door, with bar height at 40”– 44”. For doors up to 10 ft. Tall Door Kit available separately: 8055 Tall Door Kit for 8100 or 3055 Tall Door Kit for 3100.
• Door Thickness: Suits 1-3/4” standard, up to 2-1/4”.
• Stile Width: 3100 – Minimum 3-3/4”. Door construction may require additional stile width to meet fire ratings and provide adequate strength. 8100 – Minimum 3-3/4”.
• Projection: 2-15/16” when fully projected, 1-15/16”when dogged.
• Dogging: Standard dogging with hex key or optional cylinder dogging for 8100 Series only. Electric dogging also available for 3100 and 8100 Series.
• Fasteners: Standard self-tapping screws. Optional Sex Bolt Kits 26-0584 (two required per device). Specify finish.
• Cylinders (available separately): See CYLINDERS for cylinder make, thumbturn and trim ring information.
• Cylinder x Fixed Pull: (ANSI/BHMA Function 03): Accepts any standard Rim cylinder.
• 3080 Entry Trim (ANSI/BHMA Functions 08, 09): Accepts any standard diameter Mortise cylinder with MS cam. Accommodates cylinder lengths from 1” to 1-1/4”. (Available separately)
• Warranty: Five year limited.

Resources

• 8000 Series Exit Device Dogging Retrofit Kit Assembly Installation Instruction
• 8000 Series Exit Devices Cut Sheet
• 8000 Series Exit Devices;3000 Series Exit Devices Cut Sheet
• 8000/3000 Series Exit Devices Catalog
• 8000A, 3000A Alarm Exit (Hardware Power Version) Operating Installation Instructions
• 8066 Entry Function Installation Instructions
• 8099M Dummy Push Bar for Aluminum & Glass Door Installation Instructions
• 8100 Exit Device Wood or Hollow Metal Door with Hollow Metal Frame Installation Instructions
• 8100 Exit Device for Wood Door and Wood Frame Installation Instructions
• 8200 Exit Device for Narrow Stile Glass Door Installation Instructions
• 8400 Mortise Exit Device Installation Instructions
• 8500 Exit Device for Hollow Metal Door & Frame Installation Instructions
• 8600 Exit Device Installation Instructions
• 8700 Rim Exit Device for Wood or Hollow Metal Door Installation Instructions
• 8800 Rim Exit Device for Aluminum Door Installation Instructions