Repa Market 4 Inch Duct Connector Flange with Backdraft Damper ABS Plastic Round Male Fit Vent Pipe Adapter Wall Plate HVAC Exhaust Intake Coupling for Ventilation and Cooling Systems

SIZE COMPATIBILITY Fits standard 4 Inch ducts with male fit design for a snug connection Neck diameter 39 inch Wall plate dimensions 591 x 591 Total widht 244 ensuring universal fit with most HVAC ventilation systems MATERIAL DURABILITY Made of rigid plastic with integrated backdraft damper for reliable airflow control Temperature resistant from 5C 23F up to 60C 140F engineered for longlasting indoor and outdoor use FUNCTIONALITY UNIQUE FEATURES Builtin backdraft damper automatically prevents cold drafts odors and unwanted airflow from entering while maintaining smooth ventilation efficiency in heating cooling and exhaust systems INSTALLATION USE Quick DIY installation with predrilled screw holes for secure wall or ceiling mounting Can be assembled without adhesives or sealants making it easy to connect ducting pipes and ideal for both homeowners and professionals APPLICATION CUSTOMER BENEFIT Perfect for HVAC exhaust kitchen vents dryer ducts and air conditioning systems Helps reduce energy waste improve indoor air quality and maintain consistent airflow in residential and commercial projects