This filter is specific to the Lindahl Bell-O-Shade system. It fits the 3" filter slot. This filter is mounted in a plastic holder and measures 3" x 4" x 1/4" thick.
The Regular Diffusion Effect filters are designed to create a general softening of the image. This special effect sets a distinctive mood or style. These filters are available either individually in progressive steps, or as a set.
This is a complete set of Harrison Diffusion filters and comes in a wooden storage box.