Specification

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AIR FLOW (CFM)
FRICTION LOSS IN INCHES OF WATER PER 100 FT.
Maximum Velocity: 5500 FPM
Temperature Range: -20ºF to 285ºF
Bending Radius: 1 x diameter
Note: Per UL 2158A only ducts 8’ or less can be UL marked
Product
Code
UPC Code
060672
Size SKU Packaging Pack Qty.
Pack Wt.
(lbs)
Pack Cube
(cu. ft.)
BTD48HD 310128 4" x 8' 594 431 Retail Box / Cut Case 24 21 1.50
BTD420HD 310111 4" x 20' 593 880 Retail Box / Cut Case 10 21 2.37