The DFM-1A Removable Filter Holders provided by LBTEK comes with one DFM-1A-A insert, which can accommodate optical components with Ø25.4 mm diameter and a maximum thickness of 9 mm. The insert and main body are designed for disassembly and assembly via a dovetail groove mechanism. The base features an M4 threaded hole for connecting to optical posts, while the main body includes M3 threaded holes and Ø6 mm through-holes for compatibility with 30 mm coaxial systems. All mating surfaces of the filter holder incorporate light-tight design, sealed with light-tight strips. Additionally, the end face is equipped with a sealing ring to ensure light-tight performance when stacking two holders together.

The Removable Filter Holder Inserts DFM-1A-A provided by LBTEK can accommodate optical components with Ø25.4 mm diameter and maximum thickness of 9 mm, designed to be used with the DFM-1A holder. The insert features a dovetail design for easy disassembly and assembly. Includes one SM1R retaining ring as a complimentary accessory.

The Multiple Removable Filter Holders DFM-1B provided by LBTEK can simultaneously hold 3 filters, and comes with 3 DFM-1A-A inserts for optical components with Ø25.4 mm diameter and maximum thickness of 9 mm. The inserts and main body are assembled and disassembled through a dovetail groove design. The bottom features an M4 threaded hole for connecting to optical posts, while the main body has M3 threaded holes and Ø6 mm through-holes for compatibility with 30 mm coaxial systems. All mating surfaces of the filter mount are designed with light-tight features, sealed with strips. Additionally, the end face includes a sealing ring that provides light-tight performance when stacking two holders together.