Repa Market 6 Inch (150 mm) Black Exhaust Hood Vent with Rain 6 Inch,\nProduct Details\n--PRECISE COMPATIBILITY \u2013 With an opening diameter of 149 mm, the vent cover is made for 150 mm round duct openings. Overall wall plate dimensions: 190 x 190 mm. Insertion depth: 30 mm. Screw hole spacing: 140 x 140 mm. For exhaust ventilation in HVAC ducting.\n--DURABLE ABS PLASTIC \u2013 Crafted from quality and lightweight ABS plastic with temperature resistance from -20 \u00B0C to +80 \u00B0. UV-resistant and weatherproof, ensuring long-lasting performance indoors or outdoors.\n--BACKDRAFT DAMPER & RAIN COVER \u2013 Sloped hood design prevents rainwater, leaves, and debris from entering the HVAC system. The backdraft flap prevents backflow of air, odors, and cold drafts by automatically closing when ventilation is inactive. Maintains smooth airflow and energy-efficient ventilation.\n--EASY INSTALLATION \u2013 Simple DIY surface or wall duct mount design with pre-drilled holes (SCREWS .