Honlphoto Autumn Filter Kit These superior quality polyester lighting filters are pre-cut with velcro strips attached so they can be quickly fastened to a Speed Strap (sold separately). Honl Filters can be used in conjunction with Honl Snoots, Gobos and Grids. The usable filter area is 2.5 x 4 (approx. 64mm x 102mm) and the filters can be trimmed to fit individual strobes.