Specification

N
L
B
Z
M
W
A
S
VI. DETAILED DIMENSIONS
DWF KNEE WALL ACCESS DOOR
21" x 31" 27" x 35" 27" x 43"
Rough opening [in]
AxB
21 ½ x 31 ¼ 27 ½ x 35 ¼
27 ½ x 43 ¼
Outside frame dimensions - width x height [in]
WxL
21 x 31 27 x 35 27 x 43
Inside frame dimensions - width x height [in]
MxN
19 x 29 25 x 33
25 x 41
Frame depth [in]
S
3 ½
Frame thickness [in]
Z
1