The Master Flow 6 in. Straight Oval-to-Round Boot helps provide a straight transition from an oval pipe to a round pipe or insulated， flexible duct. This boot is an energy-efficient alternative to using a stack duct. Designed for durability， this boot is made of zinc-coated， galvanized steel. The boot has a maximum temperature rating of 390 degrees Fahrenheit and a minimum temperature rating of -100 degrees Fahrenheit.

Made of zinc-coated galvanized steel

Designed for 6 in. round ducts

Provides a straight "in-line" transition from an oval pipe to a round pipe or insulated flexible duct

Energy-efficient alternative to stack riser duct

Seal seams with code approved mastic， sealant or duct tape

Install with sheet metal screws (not included)

Features a minimum temperature rating of -100 degrees Fahrenheit and a maximum temperature rating of 390 degrees Fahrenheit