HVAC Premium 6'' X 4'' Aluminum Return Grille - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 7.875''w X 5.875''h]

This vent is a white aluminium slat grille, with screw holes 8 3/4 inches apart. It is not flush and has a lip that fits inside an opening, and cannot be cut off. The grille is paintable and could be used on a door. It is an unusual size, which may mean it can whistle loudly, but the majority of customers did not experience this. The vent is suitable for use with a filter, but note that it does not come with a latch and the product description may be misleading. Customers should be aware that there have been issues with incorrect labelling on some shipments and poor customer service from the manufacturer.