Register boots with flanges， can be used in the same manner as a universal register box. The universal register box has been developed with a flange around the mouth (outlet) of the product. The flange serves several different purposes， including a sheet rock frame with area for register screws and nailing area for joists. Ability to install box before dry walling.
Galvanized steel construction
Always seal seams with building code approved sealant or duct tape
Built-in flange provides area for register screws， sheet rock frame or nailing area for joists
Flange creates ability to install box before dry walling
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