Heavy Duty Plastic Duct Connector Flange For Round Vent 4 Inch Easy Install DIY Wall Plate Adapter For HVAC Exhaust And Intake Coupling Airflow Fitting For Ventilation And Cooling Systems

4-Inch Plastic Duct Flange Wall Plate for HVAC Venting
✔️ Flange insert 3.9", wall plate 5.91" x 5.91", screw holes 5.31" apart

This compact plastic duct connector flange is designed to join circular air ducts and mount to walls or ceilings with pre-drilled holes. It’s commonly used in HVAC exhaust and intake setups to minimize air leaks and simplify DIY installations.

✅ Flange insertion diameter: 3.9 inches
✅ Wall plate dimensions: 5.91" x 5.91"
✅ Screw hole spacing: 5.31 inches
✅ Material: ABS plastic, color white
✅ Temperature range: -5°C to +60°C
✅ Pre-drilled mounting holes for wall/ceiling
✅ Glue-free installation for quick setup

💡 What is a duct connector flange wall plate used for in residential HVAC systems?

This handy piece makes ducting neater and easier to install, with secure mounting and minimal leaks.

- It connects to circular ventilation ducts for a tight, leak-free path
- It can be mounted on walls or ceilings using pre-drilled holes
- It supports glue-free installation and helps improve airflow✝️