Duct Board Insulated Register Box - R6 features R6 fiberglass insulation to help provide high thermal efficiency, control condensation and absorb system noise. The box is ideal for helping you connect round pipe or insulated flexible duct to an air register or grill (pipe, duct, air register and grill not included), and it's pre-wrapped and ready to install for easy installation.
Optional Built in Collar- 6" or 7"
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Awesome exactly what I was looking for perfect
Great product fast shipping
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Great Construction
Ordered 3 of these and they arrived well packed and were very well build. I don't see anything I could do to make them better and the flanges were perfectly straight and the box completely sealed.
