The Matthews 15 1/2" Full Double Scrim is constructed of stainless steel wire diffusion and is rust resistant. Wire scrims or "wire diffusion" reduce the light output without changing the beam quality.
Diameter: 15.5 inch
Light Loss: 1.0 f-stop
Fits: Arri HMI 4K Par, Arri D40 HMI Fresnel, Arri M40 HMI