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Karpen Steel Custom Doors and Frames

Phone (828) 645-4821
Fax (800) 851-2131
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Doors

ul.gifUL Door labels are 14 or 16 gauge unless otherwise specified.
Vertically steel stiffened unless otherwise noted.

RATING & LABEL TYPE MAX DOOR SIZE SPECIAL NOTES
3 Hour ("A") 1¾" Doors
178" Doors
2" Doors
4'-0" x 8'-0" (Single)
8'-0" x 8'-0"
(Pair)
1 ½ Hour ("B")
45 min. ("C")
20 Min. (Without Hose Stream)
1¾" Doors
1 78" Doors
2" Doors
4'-0" x 10'- 0" (Single)
8'-0" x 10'-0" (Pair)
8'-0" x 8'-0" Double Egress Pairs, VR x VR
8'-0" x 10'-0" (Pair) VR x VR
3 Hour ("A")
-------------
1 ½ Hour ("B")
45 Min ("C")
18 GAGE
------------------

18 GAGE
4'-0" x 8'-0" (Single)
---------------
7'-4" x 7'-0" (Pair)
or 7'-0" x 7'-2" (Pair)
3 Hour ("A") Double Egress Pair 8'-0" x 8'-0" Doors have rabbeted meeting edge; frame must be supplied by Karpen Steel.
Up to
1½ Hour ("B")
1¾" Thick
"Oversized Doors"
4'-6" x 10'-0" (Single)
9'-0" x 10'-0" (Pair)
Auxiliary Fire latch required
if pair doors wider than 8'-0"
Fire latch goes in top channel of ACTIVE Leaf.
3 Hour ("A")
1½ Hour ("B")
45 Min ("C")
Dutch Door - Single 4'-0" x 7'-2" Top and bottom leaves must latch into strike jamb of frame. Astragal provided between leaves. Dutch door shelf is optional on push side.
1½ Hour ("B")
45 Min ("C")
138" Thick Door
1½" Door
158" Door
16 or 18 Gage
3'-0" x 7'-0" Vertically steel stiffened.
20 Min (Without Hose Stream) Lead Lined Door 8'0" x 8'-0" (pair) High Hat Ribs
1½ Hour ("B") STC 47 Acoustical Assembly 3'-0" x 7'-0" Flush Only
14 Gauge Door and Frame. Sold as unit with sound seals, threshold, and 3 cam lift hinges.
250°, 1½ Hr ("B") Temperature Rise 4'-0" x 8'-0" (Single)
8'-0" x 8'-0" (Pair)
100 sq. in. exposed glazing max.
A60 Galvanneal Only.
Available with WoodGrained A40 Galvannealed Steel.
Coreboard Interior.

CONSIDERATIONS FOR LABELED DOORS

  • Must be prime painted or A60 galvannealed.
  • Two Hinges for 60" jambs or less. One additional hinge for every additional 30" of height.
  • Must have positive latching on opening (i.e.: panic, VR, strike).

VISION LITE AND GLAZING FOR LABELED DOORS

  • Doors may be prepared for any UL Classified Glazing material classified for use with Hollow Metal Fire Doors
  • Glazing needs to be listed and labeled.
  • Temperature rise doors are allowed a maximum of 100 sq inches exposed.
  • Lite kits need to be listed and labeled for use in fire doors (such as NGP, Anemostat, etc) or as manufactured by Karpen Steel.
  • Minimum 6" nominal rails to edge of cut-outs. Can go as low as 5¾" to accommodate stock VL kits.
  • Minimum 6" nominal mid-rails (cut-out to cut-out).
  • Chart Below shows maximum sizes based on available glazing options as of 2008. When other options become available, the doors can be UL labeled to accommodate the available glazing.
    • "F" = glazing using Firelite® brand of products
    • "W" = glazing using wire glazing materials

DOOR
LABEL

Max Visible Area
(sq inches exposed)

Max
Visible Width

Max
Visible Height

Notes

3 Hr ("A")

100

12"

33" 

"F"
Glazing if allowed by the
Authority Having Jurisdiction

1½ Hr (90-min "B") or
60 min (1-Hr)

100

12"

33" 

"W"

1½ Hr (90-min "B") or
60 min (1-Hr)

1296 

36" 

54" 

"F" 

45 min (¾ hr "C") or
20 min 

1296 

36" 

54" 

"W"
May have multiple lites 

20 min 

3024 

35" 

81" 

"F"
May have multiple lites 

20 min
without hose stream

3024 

35 ¾"

83 ½" 

"F"
Can go up to 3289 sq in with
Pilkington Glazing.
May have multiple lites 

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181 Reems Creek Rd., Weaverville, NC 28787
(828) 645-4821 • (800) 851-2131 fax
(828) 645-3230 fax outside USA
karpensteel@karpensteel.com
Karpen Steel Custom Doors and Frames
All material © Karpen Steel 2014