The MicroMattebox 4x4"/4x5.65" Dual Size Filter Tray is designed to exactly fit in to the microMattebox universal filter stage.• The Redrock Micro microMattebox filter tray comes with spring-loaded locks• This dual tray filter tray supports filters of sizes 4x4" and 4x5.65"• The microMattebox Filter Tray offers secure and functional support to the filters• The microMattebox 4x4"/4x5.65" Dual Size Filter Tray comes standard with a filter matte, which are suitable for smaller filters