Pyrex Glass 4-5/16" Round Dark Red Theater Stage Light Gel Flat 1 Diffuser Lens

Description

Unused surplus, no original packing materials.
Has small air bubbles.
4-5/16 inch round = 110mm round,
3.1mm thick = 1/8 inch.
Color is dark red.
Made of Pyrex glass.
Was found in boxes in an old theater.
I do not know the brand or where it was made.
4346-4