Door is capable of bearing Up to 4 hours.
Door shall be a minimum of 44 mm thick.
As door infill, the rigid honeycomb structure is integrated with the door to form hundreds of small I- beams with the door, with a uniform thickness and flat surface that makes it easy to add lites, louvers or other features as Optional. It reinforces the full width and height of the door. Honeycomb Core Doors can be used in exterior or interior applications.
A door with a fire-resistance rating (sometimes referred to as a fire protection rating for closures) used as part of a passive fire protection system to reduce the spread of fire and smoke between separate compartments of a structure and to enable safe egress from a building or structure.
As per below list.
Bristol Honeycomb Fire Doors have qualified for the following ratings
According to BS 476 part 22 standards Integrity up to 240 minutes.
ANSI/UL10C- Up to 120 minutes