Awenta 4'' Inch / 100 mm Exhaust Hood Vent Black ABS Plastic Non Return Valne/Backdraft Damper Dryer Opening, External Ventilation Cover Outdoor Air Cap Duct

FITS 4” DUCTS & STANDARD OPENINGS – NECK DIAMETER Ø3.9 Inch (99 mm). NECK DEPTH 0.79 Inch (20 mm). FLANGE OUTER DIMENSIONS 7.5 x 7.5 Inch (190 x 190 mm). SCREW HOLE SPACING 6.5 x 6.5 Inch (165 x 165 mm). Measure the neck size and make the cutout hole opening 0.04 In (1mm) larger for a proper fit. Compatible with dryers bathroom fans and HVAC vents. SCREWS INCLUDED for a secure wall mount. BACKDRAFT & PROTECTION – Integrated gravity flap prevents cold air, dust, and unwanted things from entering. Keeps airflow one-way and efficient. QUICK DIY INSTALLATION – Simple to mount with pre-drilled holes. Includes screws and screw caps for a clean finish. No need for extra tools. BUILT TO LAST IN ANY WEATHER – Made from UV-resistant ABS plastic that withstands sun, rain, snow, and frost. Won’t yellow or crack over time. PERFECT FOR OUTDOOR VENTING – Ideal for home exterior dryer outlets, bathroom exhaust fans, kitchen extractor systems, or garage ventilation.