This Stackable Filter Tray Holder replaces the Rubber Hood on the Tilta Mirage Matte Box and allows you to secure an additional 4×5.65 filter in front of your lens. This Filter Tray Holder also allows you to secure additional 4×5.65 Stackable Filter Trays which makes it possible to mount as many 4×5.65 filters as needed. NOTE: This cannot be used with the Rubber Hood