The DFH400 Gel Filter Holder from Dedolight is is compatible with Dedolight 400 Series or LED 90 W Series light fixtures. This holder includes an open-faced slot that can accommodate a heat-resistant 4.7 x 4.7" gel filter designed for light fixtures. An open-faced, slide-in retainer then utilizes the same slot to lock the installed filter into place. The combination of the slot, filter, and retainer can then be connected to a compatible light fixture. This gel filter holder is constructed from aluminum-alloy for durability while remaining lightweight.