Louver (American English) or louvre (British English), is a window blind or shutter with horizontal slats that are angled to admit light and air, but to keep out rain, direct sunshine, and noise. The angle of the slats may be adjustable, usually in blinds and windows, or fixed.

Louver Glass is made by top quality clear glass, tinted glass or pattern glass. By cutting to the standard sizes and 
polishing the two long side edges as the flat or round shape, which will protect the fingers from hurting, also supply 
a modern performance in application.