The AC Infinity FMF120A2 Cabinet Ventilation grille is a 11.7 by 6.1 inch metal grille that can be installed into cabinets and walls to help increase ventilation. It can also be used in conjunction with a fan system to act as a passive intake or exhaust vent. KEY FEATURES Designed to be installed into cabinets or walls to help increase ventilation. Can also be used in conjunction with a fan system to act as an intake or exhaust vent. Includes optional hardware to secure two 120mm fans onto the grille, and mount it into your cabinet or wall. Features a CNC machined aluminum frame with a brushed black finish; and honeycomb grille insert. Kit includes (4) wood mounting screws, (4) machine mounting screws with nuts, (8) fan mounting screws with nuts, and (2) 120mm spiral fan guards.