Lambro 450 / TD450 Aluminum Flex Duct (4-ply; LamaFlex; 50ft; Nonretail bulk)
• 4-ply flex air connector for bathroom venting;• LamaFlex(R) ;• Fire-retardant, with max operating temperature of 250deg F;• Max air handling capacity of 5,000 FPM;• 4 in. dia x 50 ft. ;• Nonretail bulk;