The X1B splice tray is designed for installation into the OPTOKON system of optical rack mount distribution frames and wall mount optical boxes. The splice trays are equipped with fixed internal fiber bend radius protectors, which allow storage and organization of spare fiber, both primary 250 µm and 900 µm coating. The X1B splice holders can be used in the splice cassettes, designed for standard heat shrinkable protection sleeves. The capacity depending on outer diameter of protection sleeves after heating is 6 to 12 splices.

The X1B stackable series allows installation hinges at the sides of the cassette, which are designed for opening the block of cassettes and enabling easy access to the spliced fibers during fiber optic systems operation. The lid is accessories for splice tray and can be used to cover a single or block of cassettes.