These doors are used for openings in walls separating buildings that are joined together.
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.
There are some basic requirements for an opening before it can be classified as fire rated.
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.
When combined all of the components of the door form an assembly that protects the opening.
Protect from rust and damage during storage and erection until completion.
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.
Fasten temporary steel spreaders across the bottom of each door frame.
1 7 storage and handling a.
Most labeled doors will have an a b or c label.
No glass is allowed in these doors.
We keep 18 gauge hollow metal doors in stock with 16 and 14 gauge hollow metal frames.
Revision date drawn.
For category a the intumescent seal must be built into the door thus hidden from plain view.
These doors are usually used for stairwell doors but are sometimes used at all the rated walls in a building.
C labeled steel doors are used primarily for openings from a corridor into another room in the same building.
In other cases the entire assembly including all hardware has a single rating.
C label hour rating for 1 hour wall.
Prior to shipment label each door and frame to show location size door swing and other pertinent information.
Mechanical or electrical rooms.
Store doors and frames at the site under cover.
If the requirement is for category b the frames must have the intumescent seal applied to the rabbet of the frame.
For wood doors with 20 45 60 90 minute ratings the rule is simple.
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 1 hour c label hour d.
Hollow metal doors are shown to have superior performance for strength and durability compared to the alternate materials.
Metal doors are more sanitary much easier to maintain and can withstand more abuse than wood or aluminum.
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 rating for 2 hour wall.
1 1 2 hour rating.
The gray primer finish is suitable for painting.
B labeled steel doors are used primarily for stairwell doors and sometimes are used for other doors in a building i e.
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.
Fire rated wood doors are ordered in as needed.
