LEE Filters 129 Heavy Frost Diffusion Lighting Gel Filter Roll, 2" Core, 48" x 25' A strong diffusion that eliminates nearly all shadows. Flame retardant. Frost is used for a variety of applications, applying low to medium diffusion to a beam of light while maintaining the shape and beam centre. Features: Produces a strong diffusion effect For softening spotlight beam edges without altering shape Reduces contrast between highlight areas Heat resistant to 356°F Polymer film construction Technical: 6774K Daylight (Source C)25% Light Transmission0.6 Density2 Stop Value Size: Roll (W: 48" x L: 25' / W: 122 cm x L: 7.6 m) Frost Diffusion: 258 Eighth Hampshire Frost < 1/4 Stops (NFR)257 Quarter Hampshire Frost < 1/4 Stops (NFR)256 Half Hampshire Frost < 1/4 Stops (NFR)420 Light Opal Frost < 1/4 Stops (NFR)253 Hampshire Frost < 1/4 Stops (NFR)255 Hollywood Frost < 1/3 Stops (NFR)410 Opal Frost 1/2 Stops (NFR)220 White Frost 1 1/3 Stops (FR)129 Heavy Frost 2 Stops (FR) In The Box: LEE Filters 129 Heavy Frost Diffusion Lighting Gel Filter Roll, 2" Core, 48" x 25'