Master Flow® Ductboard Transition Box Specs
Master Flow® Ductboard Transition Box Docs
Master Flow® Ductboard Transition Box Videos
efficient
duct board kit acts as a transition point to split a branch run into several runs

versatile
Additional flexibility and can accept multiple lines

easy
Pre-cut for easy assembly using approved foil tape
Get automatic Lifetime Protection on your entire GAF roofing system
When you install any GAF Lifetime Shingle and at least 3 qualifying GAF accessories, you'll automatically get a Lifetime limited warranty on your shingles and all qualifying GAF accessories*.
Where to buy
Find a GAF distributor near you.