【Durable ABS Construction】：Made of UV-resistant ABS plastic, this vent cover is lightweight yet solid, resisting cracks and corrosion in humid environments (-40°F to 185°F / -40°C to 85°C). 【Precise Fit for 6" Ducts】：Diameter: 159mm (6") opening
Height: 75mm (2.9"). Seamlessly connects to 6" duct pipes, HVAC systems, or wall/ceiling holes. 【Dual Protection Design】：Built-in fine mesh blocks insects and debris, while the rubber weather seal prevents leaks, drafts, and moisture damage. 【Spring Mechanism】：This spring soffit exhaust vent cover is easy to install; simply push it into place. Its spring-loaded design allows for tool-free installation without the need for drilling, and it will not easily come loose. 【Multi-Scene Ventilation】：Ideal for bathroom fans, kitchen exhausts, attic vents, grow tents, or office HVAC systems. 【KINDLY NOTE】: Before purchasing, ensure the size of the hole on the wall and ceiling or your duct matches our air vent. Regularly inspect and clean the air vent to maintain optimal performance. KISPISS ABS Adjustable Soffit Vent Cover with Fly Screen - 6" (159mm) Round Air Vent for Inline Duct Fan, HVAC & Exhaust Systems（Spring Mechanism）