duct connector flange, plastic straight pipe flange for heating cooling ventilation system (4") repa market quick solution for easily connecting your ducting to your wall, floor, ceiling opening or dryer vent hose flange mounting flange for trouble-free, air-tight installation easy to install, compatible with inch tube vent pipe cap best compatible with other repa market hvac parts. we always provide you with premium equipments and service for home improvement sm:cover insulation fan hood flex flexible collar plate insulated self cut system indoor duct vent pipe cap dryer exhaust damper cap roof seal house idealair outlet insulation pads dryer conditioner fittings heat adhesive range gasket pipe kit insulation vent