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86 RT-PRC031-EN
Dimensional Data
Downflow Roof Curb
Figure 32. Optional Roof Curb (Downflow)
Table 47 Downflow Roof Curb Dimensions (In.)
Dimensions
Casing
Blank
Section A B C D E F G H I J
A, B, C
None 11 15/16 49 8/16 5 15/16 123 253 2/16 49 8/16 20 15/16 104 11 15/16 1 13/16
4Ft 11 15/16 49 8/16 5 15/16 123 301 5/16 49 8/16 20 15/16 104 11 15/16 1 13/16
8Ft 11 15/16 49 8/16 5 15/16 123 349 9/16 49 8/16 20 15/16 104 11 15/16 1 13/16
Dimensions
Casing
Blank
Section K L M P R S T
A, B, C
None 1 13/16 314 9/16 134 14/16 163 15/16 139 7/16 28 15/16 29 1/16
4Ft 1 13/16 362 12/16 134 14/16 163 15/16 139 7/16 28 15/16 29 1/16
8Ft 1 13/16 411 134 14/16 163 15/16 139 7/16 28 15/16 29 1/16
Cross Member Location
Casing
Blank
SectionU1 U2W1W2W3W4W5W6W7
A, B, C
None n/a n/a 103 6/16 145 11/16 183 6/16 218 4/16 n/a n/a n/a
4Ft n/a n/a 103 6/16 145 11/16 187 15/16 231 10/16 266 8/16 n/a n/a
8Ft n/a n/a 103 6/16 145 11/16 189 15/16 234 3/16 279 13/16 314 11/16 n/a