The Cabinet Ventilation grille is a 4.6 by 4.6 inch metal grille that can be installed into cabinets and walls to help increase ventilation. It is the same exact dimensions as AIRPLATE S1 and can be used to replace their black mounting frames by using a a phillips head screwdriver. The frames can also be used in conjunction with a fan system to act as a passive intake or exhaust vent. The kit includes an optional 80mm fan guard and hardware to secure a 80mm fan, a popular size for computers and DIY applications, onto the grille. To mount your fan and grille into your cabinet or wall, you would need to cut a square hole approximately 3.42 by 3.42 inches. Features a CNC machined aluminum frame, pre-secured to a steel honeycomb grille, and four flat-head screws, all painted matte white. Information on the additional included hardware can be found below.