GAPGUARD FDTB Fire-Rated Thru-Bolts to Fill Open Holes, Box of 20ea. Corbin Russwin Exit Device Trim Effectively reducing the infiltration of

Effectively reducing the infiltration of light

Auxiliary latch bolt

Trine 3024 3000 Series Electric Strike Mechanism

Temperature range -81°F to 275°F

Onboard lock sequencing

GAPGUARD FDTB Fire-Rated Thru-Bolts to Fill Open Holes, Box of 20ea. Corbin Russwin Exit Device Trim Effectively reducing the infiltration ofNGP GAPGUARD THRU BOLTS, FDTB Fits 1 3 4" to 2" Thick Doors Zinc Plated Steel Sleeve with Machine Screws Meets requirements of NFPA 80 for Use on Fire Doors Use to Fill Holes in Wood or Steel Fire Doors to Protect Label Compliance Available in Boxes of Twenty 3 8" or 1 2" diameter Part Numbers FDTB 38 (3 8" Thread Size 1 4 20) FDTB 12 (1 2" Thread Size 5 16 18)