Astria 40-inch Light-Tinted Tempered Glass Window Kit LSM40ST-ODKSGAstria 40 inch Light Tinted Tempered Glass Window Kit LSM40ST ODKSG Product Details What key features and benefits does the Astria 40 inch Light Tinted Tempered Glass Window Kit offer, and how does it enhance the safety and aesthetics of a fireplace while improving heat retention? The Astria 40 inch Light Tinted Tempered Glass Window Kit enhances safety and aesthetics in fireplace installations. Constructed from durable tempered glass, it provides a