inquiry to Allite Lighting Co., Ltd

I have an old bathroom wall fixture labeled “Allite 978 819.” I broke one glass bulb cover (white frosted Extension: 4-1/2”, Height: less than 3”, Width: 9’). • The ring of the fixture it fits into is: ¼” ring, Width = 9” outside and 8-1/2” inside. • Extension of ring = 4-1/8” inside and 4-3/8” outside. Is it possible to replace a glass cover? Larry Libauer Northbrook, Il USA 224-723-5503