High Quality Material: The ventilation holes are made of high quality stainless steel, which is resistant to insects, corrosion, rust, wear, not easy to deform and has a long service life. High Quality Design: The air outlet is designed with several small round holes to maintain air circulation, prevent other insects and dust from entering, and facilitate cleaning. Excellent Features: Good permeability air vent, suitable for various cabinets, ventilation grille can be recessed or glued, easy to install on the surface / installation indoors and outdoors. Safety In Use: The circular vent is easy to install, and it can be directly installed with the same diameter hole, or you can use a small screwdriver to open the bayonet and push into the stainless steel vent for installation and processing. Scope: The ventilation holes one are suitable for cabinets, bookcases, drawers, cabinets, etc., to circulate air and keep the cabinet dry.