Protect from rust and damage during storage and erection until completion.
B label hollow metal door.
Mechanical or electrical rooms.
For category a the intumescent seal must be built into the door thus hidden from plain view.
Metal doors are more sanitary much easier to maintain and can withstand more abuse than wood or aluminum.
C label hour rating for 1 hour wall.
1 7 storage and handling a.
The gray primer finish is suitable for painting.
Standard metal doors are 1 3 4 thick and are prime coat painted.
If the requirement is for category b the frames must have the intumescent seal applied to the rabbet of the frame.
Hollow metal doors and frames p o.
Prior to shipment label each door and frame to show location size door swing and other pertinent information.
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.
B label 1 hour c label hour d.
There are some basic requirements for an opening before it can be classified as fire rated.
1 1 2 hour rating.
Fasten temporary steel spreaders across the bottom of each door frame.
Most labeled doors will have an a b or c label.
B labeled steel doors are used primarily for stairwell doors and sometimes are used for other doors in a building i e.
We are a ul certified fire label shop and can label our hollow metal doors and frames with up to 3 hour fire ratings.
In other cases the entire assembly including all hardware has a single rating.
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.
No glass is allowed in these doors.
Revision date drawn.
Store doors and frames at the site under cover.
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.
When combined all of the components of the door form an assembly that protects the opening.
These doors are used for openings in walls separating buildings that are joined together.
C labeled steel doors are used primarily for openings from a corridor into another room in the same building.
Hollow metal doors are shown to have superior performance for strength and durability compared to the alternate materials.
B label 1 hour rating for 2 hour wall.
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.
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.
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.
We keep 18 gauge hollow metal doors in stock with 16 and 14 gauge hollow metal frames.
