The Lambro 3 1/4 inch x 10 inch to 4 inch round galvanized steel straight stack boot used for HVAC systems, floor registers or range hood venting. Installations consist of transitioning from round pipe or flexible insulated duct to rectangular stack duct. The stack boot is made of zinc-coated 30 gauge galvanized steel and provides advanced corrosion protection with pre-installed s-cleats. Install using sheet metal screws (not included) and it is recommended to seal seams with code approved mastic, sealant or duct tape (not included).
Made of zinc-coated galvanized steel
30 gauge galvanized steel construction
Transitions from 3 1/4 inch x 10 inch rectangular stack duct to 4 inch round pipe
Pre-assembled with boot clips and button locks for easy snap-in installation
Installs using steel metal screws (not included)
Seal seams with code approved mastic, sealant or duct tape (not included)
