304 Stainless Steel Material: Made of high quality 304 stainless steel material, the wall mounted ventilation grille has better performance and longer service time.Application: the grille is ideal for various applications including dryer/pipe vents, bathroom vents, exhaust fans, air conditioning units, kitchen fans, wall vents, heat transfer systems and ventilation, gas and electric dryers, extractor fans and industrial uses.Good design: the wall ventilation grille is perfect for outdoor use, designed with a bell shape and Downward-facing blades to prevent rainwater or wind from entering the ventilation system.Strong toughness, not easy to deform: With its strong toughness, the tips can be reversed to provide a secure grip on the pipe, making installation easier and preventing deformation. The grille can also effectively isolate debris and dust to prevent pests from blocking the channel.Product specifications: 100mm.Stainless steel vent pipe cover 304, air outlet through the exterior wall of the hood, kitchen hood air outlet windproof cover.This stainless steel vented hood features a 45" grille degrees inside. Its external ventilation hood is hemispherical to keep wind and rain out, and the louver design prevents rainwater from entering the pipes. Practical design can bring you a comfortable life. It is suitable for installation at fan ventilation opening, wall decoration, water heater smoke outlet and bathroom top. Air outlet from ventilation system, exterior hood, etc. Size: 100mm.Note: The product is made of stainless steel, you must wear gloves when installing, be careful to avoid scratches.How to install? 1. Measure the size of the opening and purchase the corresponding sized hood.2. Arrange the position of the cover and mark the position of the screw port with a colored pen.3. Use an electric drill to open the screw opening at the mark.4. Secure the stainless steel cover.5. Install the screws into the previous screw openings.6. The installation is complete.