Astria 36-inch Black Standard Bi-Fold Glass Door Fireplaces BD36Astria 36 inch Black Standard Bi Fold Glass Door Fireplaces BD36 Product Details What is the purpose of the Astria 36 inch Black Standard Bi Fold Glass Door for fireplaces, and how does it enhance both safety and the visual appeal of wood burning installations? The Astria 36 inch Black Standard Bi Fold Glass Door is designed to enhance both safety and aesthetics for wood burning fireplaces. Its primary purpose is to act as a barrier, preventing sparks