I have a 4 foot dryer vent duct that is brand new. It is made by In-O-Vate technologies and comes complete with 2 clamps to attach to the dryer and outside vent. UL approved(fire proof). Regular retail for the duct and 2 clamps is approx $32. I am only asking $10 for the duct and it comes complete with 2 clamps. Picture shows 2 but only one available. Call Tony at 519-888-6904 if interested. Thanks.