40 x PVC Window Vent Cover, Window Storm Cover, Drain Cover, Window Vent Cover, Window Water Slits, Window Aeration Mouth, Drain Protectors for Windows - Black

Weather and aging resistant material: This model of PVC window aeration cover is made from weather-resistant ABS plastic or ABS+PC composite material, capable of withstanding wind, rain, and temperature variations. It has undergone a UV aging test of 500 hours, achieving an IPX5 waterproof rating, an outdoor life of more than 5 years and impact resistance ≥ 50 kJ/m². Ultra-effective drainage and anti-clogging: Featuring an opening ≤ 2 mm, the storm window cover effectively prevents the accumulation of leaves, dust, insects, and other debris, ensuring a drainage flow ≥ 500 ml/min. This prevents water ingress and mould formation on the windowsill, reducing the risk of malfunctions by up to 80%. Quick and tool-free installation: The drainage nozzle model uses a clip-on or press fastening system, requiring no tools. It takes only 10 seconds to replace a single blind. After installation, it ensures a stable and shock-resistant fixation, suitable for ambient temperatures from -20 °C to 70 °C. WIDE COMPATIBILITY WITH UNIVERSAL SIZES: Standard size window vent cover (40-10mm) fits most PVC/UPVC doors and windows, double glazed water drainage systems and aluminum alloy window frames. It is the ideal replacement for lost or damaged original exhaust grilles. Economical packaging: Each package contains 40 window water slot stopper grids, a sufficient quantity to meet the needs of numerous repairs in residential and commercial environments, and can also serve as a daily replacement grid. Compatible with various PVC doors and windows for protection against water ingress