A dense diffuser that creates an even field of soft, shadowless light. Excellent for combining multiple lighting fixtures into a single, large area source. Tough, heat resistant base.With over 20 different materials, Rosco offers the broadest range of diffusion available. A wide variety of effects is possible, ranging from the slightest "feathering" of a beam edge, to the creation of a broad shadowless expanse. Except as noted, all materials are 48" x 25' (122 cm x 7.6 m), sheets 20" x 24" (50 cm x 61 cm).