The Elinchrom Stackable External Diffuser For Rotalux Squarebox 27x27in (70x70cm) diffuses light evenly and cleanly when mounted to the front of the Rotalux Squarebox 27x27in (SKU EL26642). Suitable for use in conjunction with Rotagrids, stacked for multiple levels of diffusion, or as a replacement for a worn Rotalux External Diffusor. Stackable Diffusion - With hook and loop fasteners on both the inside and outside of the frame, multiple diffusers can be stacked to create a progressively softer quality of light. Color Safe - Elinchrom manufactures all of their diffusers without the use of optical brighteners, ensuring brilliant, accurate color reproduction. Clean Highlights - The diffusor fabric is sewed to a black fabric frame to eliminate any mirroring effect that can be apparent when photographing reflective surfaces such as glass or metal. Compatible with Rotagrids - The hook and loop fasteners on the outside of the frame also serve as a secure mount point for Rotagids.