18x18x18x18" Tri-Wyes are made of Galvanized Sheet Metal
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18x18x18x18" Tri-Wyes are made of galvanized sheet metal transition up or down to one duct size to another.
Drive several screws and or heavy duty duct tape and or duct sealant to secure connection from loosing air flow under pressure.
Visit our Accessories for Tapes and Sealants.
Tri-Wyes Sizes range from 3" to 20" duct diameter.
We can manufacture any special sizes that you may need in One Day.
Call or e-mail us today with your Tri-Wyes sizes.