Dimensions Guide

Classic Series Steel Sided Doors & Ultra Series Doors (only available in Size C at this time)
inches cm inches cm inches cm inches cm inches cm
B 51 129.5 64 162.6 22 55.9 60 152.4 44 111.8
C 55 139.7 72* 182.9* 19-1/2 49.5 67 170.2 48 121.9
O 47 119.4 58 147.3 30 76.2 58 147.3 40 101.6
SL 51 129.5 43-1/4 109.9 52 132.1 60 152.4 44 111.8
inches cm inches cm inches cm inches cm
36 - 41 91.4 - 104.1 SLW3641 45.25 114.9 57 144.8 30 76.2
46 - 51 116.8 - 129.5 SLW4651 55.25 140.3 57 144.8 40 101.6
47 - 51 119.4 - 129.5 SLW4751 55.25 140.3 67 170.2 40 101.6
50 - 55 127 - 139.7 SLW5055 59.25 150.5 60 152.4 44 111.8
54 - 59 137.2 - 149.9 SLW5459 63.25 160.7 67 170.2 48 121.9
* The SLW door length is adjustable for installation flexibility
Extension panel shown in red
Basement Door Standard Sizes and Dimensions
BILCO Basement Doors meet the International Building Codes found in section R310.3
* Extensions are available to increase the door len
g
th for the Size C doors onl
y
. Classic Series extensions are available in 6" (15.2 cm), 12" (30.5 cm), 18" (45.7 cm), and
24" (61 cm) lengths. Ultra Series extensions are available in 6" (15.2 cm) and 12" (30.5 cm) lengths only. Two or more can be used back to back for longer areaway lengths.
Classic Series Sloped Wall Doors
Width Length Height
Length WidthSize
Length
Door Opening
Width
* Extension PanelsDoor Opening
172.1 - 178.4
189.2 - 195.6
cminches
65.25 - 67.75
65.25 - 67.75
74.50 - 77
67.75 - 70.25
74.50 - 77
Size
Inside Width of
Masonry Areaway
Width
165.7 - 172.1
165.7 - 172.1
189.2 - 195.6
Length*