A large selection and inventory of lighting gels and filters from Lee, Rosco and Gam. Looking for the best price on lighting gels? You've found your source for color and diffusion. Buy lighting gels online at BarnDoor Lighting. Light gels available in sheets from as small as 5.25" x 6" to as large as 4'x4'. Have a large job or looking for a quantity discount? The best value is to buy Lighting Gel Rolls available in 24" x 25ft or 48" x 25ft. Need to keep your gels organized and protected? Check out our gel filter rolls, gel roll bags and gel sheet cabinets. How to mount or attach gels? Check out our gel frames for easy attachment.