The Kondor Blue 4×5 Matte Box System can hold a single 4×5 filter in the front-loaded filter holder. Every component is made from premium materials and finishes for durability and rigidity. TheKondor Blue 4×5 Matte Box System comes fully loaded with 4×5.65 (2-4mm thick) filters for uncompromised performance and ease of use. If thats not enough for you, any combo of the KONDOR Blue MBS can be put together in only one work session to any level of production, budgetary, shooting or ownership requirements, making this level of flexibility offered in this price point unprecedented. KONDOR Blue matte boxes are made from high-end materials strictly from component to component.