Von Duprin 9975EO-F 4 US28 Grade 1 MTS Exit Device 628

Von Duprin 9975EO-F 4 US28 Grade 1 Mts Exit Device 628 is a robust Grade 1 mortise exit bar, designed for commercial applications. With a 48" device length, this fire-rated exit device is ideal for both single and double doors, ensuring safe egress in emergency situations. Its satin aluminum clear anodized finish provides a sleek, modern aesthetic while enhancing durability. This exit device is UL listed for panic exit hardware and can be fitted onto stock hollow metal doors with an 86 cutout, accommodating door stiles as narrow as 4 3/4" (121mm). The 7500 mortise lock is equipped with a 3/4" (19mm) anti-friction latch bolt, which is field-reversible, allowing for efficient installation without removing the lock from the door. Additionally, it features a non-handed auxiliary bolt for added deadlocking security. Versatile in design, the 9975 Series supports various trim options and is ANSI A156.3 – 2001 Grade 1 compliant. This device is suitable for door thicknesses ranging from 1-3/4" to 2-1/4" and widths from 34" to 48". With a limited three-year warranty, the Von Duprin 9975EO-F ensures reliability and peace of mind for building professionals and knowledgeable homeowners alike.

Grade 1 Mts Exit Device 628

Grade 1 Mortise Exit Bar, 48" Device, Fire Rated, Exit Only, Less Dogging, Satin Aluminum Clear Anodized Finish, Field Reversible

9875/9975 Mortise lock device for all types of single or double doors, UL listed for panic exit hardware. Fits stock hollow metal doors with 86 cutout and door stiles as narrow as 4 3⁄4" (121mm). The 7500 Mortise lock is equipped with a 3⁄4" (19mm) anti-friction latch bolt which is field reversible without removing the lock from the door. It has a non-handed auxiliary bolt for deadlocking and a faceplate with an adjustable bevel.

Devices are ANSI A156.3 – 2001 Grade 1

The 9975 Series is for all types of single or double doors and is UL listed for panic exit hardware.  Fits stock hollow metal doors with 86 cutout and door stiles as narrow as 4 3 /4" (121mm). 

• Device functions: Device ships EO/DT/NL. Field selectable. For TP, K or L remove NL drive screw from device.
• Device lengths: 3' 2'4' to 3' (711mm to 914 mm) Door size 4' 2'10" to 4' (864 mm to 1219 mm) Door size
• Device centerline from finished floor: 39 13/16" (1011 mm) 39 11/16" (1008 mm) with mullion
• Center case dimensions: 8" x 2 3/4" x2 3/8" (203mm x 70mm x 60mm)
• Mechanism case dimensions: 2 1/4" x 2 1/4" (57mm x 57mm)
• Projection: Pushbar neutral – 3 13/16" (97 mm) Pushbar depressed – 3 1/16" (78 mm)
• Fasteners & sex bolts (SNB): Includes screw pack for 1 3/4" (44mm) and 2 1/4" (57mm) thick metal or wood do

Resources

• 10 Things You Need to Know About the Von Duprin Chexit
• 98/9975-2 Series Wood Door Template
• 990TP/TP-BE/NL Trim 98/9975 Mortise Lock Device Installation Instructions
• QEL Data Sheet
• Von Duprin Finishes Chart