DP74 Drop Plate Trudoor Inventory The ladder post comes completely

The ladder post comes completely preassembled and ready to mount to the top two rungs of a ladder

All lite kits are carefully packaged to ensure safe delivery

UL/cUL Listed for up to 3 hours for "A" label single doors- UL10C Positive Pressure Rated- UL10B Neutral Pressure Rated- Warnock Hersey listed for up to 3 hours with fire-rated removable mullion

1-1/2 hour fire rating on wood doors up to 4' wide by 10' tall

Available in 17

DP74 Drop Plate Trudoor Inventory The ladder post comes completelyDorma DP74 Drop Plate Compatible with 7400 Series closers For top jamb mount to clear a surface applied stop holder. Overhead ceiling clearance must be 1 3 4" (44 mm) or more. Permits parallel arm installation with minimum top door rail of 2 1 2" (64 mm) for non hold open, 2 3 4" (70 mm) for friction hold open applications (assuming 5 8" [16 mm] stop dimension).