Gray Flex 4-4GF

Name: Gray Flex 4-4GF
Brand: Gray Flex
SKU: 40302

Part #: 40302

MPN: 4-4GF

Gray Flex Quality Flex 4" x 25' R-4.2 Insulated Flexible Air Duct, Black Jacket

UOM: EA

Additional Information: Indoor use only
Color: Black
Duct Size: 4 in
Length: 25 ft
Material: Black polyethylene jacket; polyester-film core with steel-wire and textile helix; fiberglass insulation (min 1-1/4")
Pressure Rating: 10 positive / 0.75 negative in w.g.
R-Value: 4.2
Series: Quality Flex GF (R-4.2)
Standards: UL 181 Class 1; NFPA 90A/90B
Temperature Rating: -20 to 250 °F
Vapor Transmission: 0.1 (max 0.3) perms
Velocity Rating: 5500 fpm
ERP item ID: 40302