The honl hp filter cto warming filter kit includes a selection of filters allowing you to both colour correct the flash output and to add varying degrees of warmth to portraits these superior quality filter gels are pre cut and attach quickly and securely to the honl photo speed strap sold separately and can be used in conjunction with the honl snoots gobos and grids each sold separately the usable gel area is 25 x 4 and can be trimmed to fit individual strobes measure the surface are