10 in. x 4 in. to 4 in. Universal Register Box

The Master Flow 10 in. x 4 in. x 4 in. Universal Register Box creates a straight (in-line) transition from round pipe or insulated flexible duct to an air register. It features 30-Gauge, galvanized steel construction. It has a maximum temperature rating of 390°F.

• Made of 30-Gauge, galvanized steel
• Creates a straight (in-line) transition from 4 in. round pipe or insulated flexible duct to a 10 in. x 4 in. air register
• Always seal seams with building code-approved sealant or duct tape (not included)
• Maximum temperature rating of 390°F, minimum temperature rating of 100°F