Products

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Item #

Wall Size

Exhaust Direction

Thickness

Industry Standards

N/A 2 x 4 in N/A Downward N/A 21 gauge N/A Underwriters Laboratories (UL)
N/A 2 x 6 in N/A Downward N/A 21 gauge N/A Underwriters Laboratories (UL)
N/A 2 x 4 in N/A Upward N/A 22 gauge N/A Underwriters Laboratories (UL)
N/A 2 x 6 in N/A Upward N/A 22 gauge N/A Underwriters Laboratories (UL)
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1