is gasketing required for rated door

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Intumescent seals or gaskets are not required on fire rated steel doors. Generally speaking, the requirement for intumescent seals or gaskets are a function of the individual manufacturers’ listi...
Astragals are required on: 3 hour fire rated pairs: Double doors - swinging in the same direction Double Egress - swinging in opposite directions Fire rated Dutch Doors Fire rated 1 3/4" t...
All 3 hour fire rated pairs of doors do require an astragal when used without a removable hardware mullion. Pairs of doors with removable hardware mullions are treated and listed as 2 single doors...
Grouting frames is: A process done in the field during hollow metal frame installation  The internal cavity of the frame is fill with masonry or mortar It is intended to mainly provide ...
H-Series doors in single leaf applications with only mortise locks meet the FBC / NOA Zone 4 requirements? 3070 max flush outswing applications Zone 4 requires 120 to 170 psf.
Yes, the holes on the door would be covered up by the 25-R-L device.
The (4) center case mounting holes are in the same location but there are some small modifications that will be needed like the 3/4" dia. hole at device CL for the main cam clearance shown o...
Minimum dimensions to cutouts for glass lights: Vertical edge of door to edge of cutout = 5 29/32" Top of door to top of cutout = 6" Bottom of door to bottom of cutout = 10" Reinforcing chann...
Yes, an automatic operator can be installed on a Dutch door. The operator must be installed on the top leaf of the Dutch door. Only the top half will open unless the top and bottom leaves (se...
The Von Duprin Guard-X exit device is not fire rated because the deadbolt is not spring loaded. Therefore, there would be no positive latching as required on a fire rated opening.