B Label Hollow Metal Door

B label 1 hour rating for 2 hour wall.

B label hollow metal door.

Box 7269 monroe la 71211 318 361 0796 fax 318 323 5068 dhi door and hardware institute ul door swing chart approval distributor single doors pairs of doors no. These doors are usually used for stairwell doors but are sometimes used at all the rated walls in a building. For category a the intumescent seal must be built into the door thus hidden from plain view. Mechanical or electrical rooms.

Hollow metal doors and frames p o. 1 1 2 hour rating. These doors are used for openings in walls separating buildings that are joined together. Revision date drawn.

Store doors and frames at the site under cover. C labeled steel doors are used primarily for openings from a corridor into another room in the same building. The gray primer finish is suitable for painting. Most labeled doors will have an a b or c label.

Fire rated wood doors are ordered in as needed. Fire rated hollow metal frames complete fire rated frame information including a b and c label frames along with the requirements of a fire rated opening. 1 7 storage and handling a. For wood doors with 20 45 60 90 minute ratings the rule is simple.

If the requirement is for category b the frames must have the intumescent seal applied to the rabbet of the frame. Mesker door offers a full array of fire rated hollow metal doors including 3 hour 1 1 2 hour or 90 minute 3 4 hour or 45 minute or 20 minute. B label fire rated doors are rated for one hour and half and c label doors are fire rated for three quarters of an hour. When combined all of the components of the door form an assembly that protects the opening.

Standard metal doors are 1 3 4 thick and are prime coat painted. Hurricane wind load testing fbc wind load approvals on our doors and frames difference between fbc approvals and noa s wind speed to design pressure chart wind borne debris region. Prior to shipment label each door and frame to show location size door swing and other pertinent information. In other cases the entire assembly including all hardware has a single rating.

We are a ul certified fire label shop and can label our hollow metal doors and frames with up to 3 hour fire ratings. B label 1 hour c label hour d. There are some basic requirements for an opening before it can be classified as fire rated. Fasten temporary steel spreaders across the bottom of each door frame.

B labeled steel doors are used primarily for stairwell doors and sometimes are used for other doors in a building i e. For this reason all components of the door must include a rating label including the door panel the door frame locksets gaskets hinges and door protection plates. No glass is allowed in these doors. Protect from rust and damage during storage and erection until completion.

Hollow metal doors are shown to have superior performance for strength and durability compared to the alternate materials.