Shop › DCR-42 (Flange For Exhaust Duct) Image 1 of 1 DCR-42 (Flange For Exhaust Duct) $95.00 16” Metal Flange/Collar that is used for attaching exhaust ducting.Fits Model:KwiKool KIB4221-3What's Included:16” Flange with screws Quantity: Add To Cart Added! 16” Metal Flange/Collar that is used for attaching exhaust ducting.Fits Model:KwiKool KIB4221-3What's Included:16” Flange with screws