In the standard of UL listed wood fire doors, there are different ratings such as 20, 45, 60, 90 minutes. 20-minute fire rating is a most common option for most interior doors for apartment, office and some other projects. But there always different demands for different buildings.
45 minutes rating wood door is usually used to multi-storey apartment which is less than 7 levels, the purpose that using this door is to leave enough time for firefighters to rescue residents. 45 minutes wood usually has a same appearance with normal flush doors so we don’t go in detail here, but is does has some difference with 20 minutes fire doors since in most of time, especially in USA market, it only goes with a hollow metal frame which has a much stronger fire resistance than door jambs. Hence a 45 minutes wood door usually looks a little boring cause it’s always flat and there couldn’t be many different designs on frame but only a professional fire door.
Asico offers wooden fire rated door comply to the standard:
**Tested to UL 10(B) & UL 10(C) and confirming to NFPA and ASTM
**Tested as per BS476 Part 22, BS EN 1634
Asico Wooden Fire Rated Door Specification
Fire Rated Frame:
Asico offers two options of jamb for 45-minute wood fire rated door: Solid hardwood frame; Metal Frame
--Solid hardwood frame
Asico Lite Frame
Basic guidelines on glass are as follow:
3 Hour: Max exposed glazing 100 sq. Inch. 12” maximum width; 33” maximum height
1 1/2 Hour:Max exposed glazing 2034 sq.Inch. 36” maximum width; 56.5” maximum height
1 Hour: Max exposed glazing 3204 sq.Inch. 36” maximum width; 89” maximum height
Asico "Y" Blade Louvres
Sizes Available ( Door Cutout)
---Width x Height: 12" x 12"; 18"x12"; 18"x18"; 24"x12"; 24"x24"
In addition, 45 minutes wood door is usually used as an entrance door so it often requires quite a good leakproofness and resistance of water and hit. Fir more information about fire doors please take look at our website and contact with us for further assistance. Meanwhile Asico door could offer UL hollow metal door, BS476 EN wood fire door FD30, FD60, FD90, FD120, solid interior door and exterior door, sliding door, barn door and so on.