3 in. to 4 in. Roof Vent Kit for Round Duct Steel in Black Value:each 0 Ah battery (48-11-1880)

0 Ah battery (48-11-1880)

The LM400 has a vertical storage position

Manual Override: Push button lets you turn the fan on for immediate ventilation needs

) 16889 cu in Included Accessories Keyed Lock

Made from 18-8 stainless steel for strong corrosion resistance

3 in. to 4 in. Roof Vent Kit for Round Duct Steel in Black Value:each 0 Ah battery (48-11-1880)The RVK1A Steel Roof Cap Kit is an easy to install vent for ventilation fans (bath, rec room, home gym, etc.). It is compatible with 3" or 4" ductwork and includes a 3" to 4" adapter for convenience. This cap features both a back draft damper and bird screen, preventing outside air from entering the home and birds and small pests from entering duct work. This kit includes all materials needed for installation, including 8 ft. of 4" flexible ducting,