Pyrex Glass 4-5/16" Satin Etched Theater Stage Light Gel Flat 1 Diffuser Lens

Description

Unused surplus, no original packing materials.
110mm round = 4-5/16 inch round,
2.8mm thick = 7/64 inch.
One side is smooth glossy, the other side is frosted.
Made of Pyrex glass.
Was found in boxes in an old theater.
I do not know the brand or where it was made.
4346-10