Hottest Deal on Polycarbonate Front Door Window Awning Patio Cover Canopy BUY 2, GET 1 AT 15% OFF (add 3 to cart). Glassy awnings enhance the appearance of homes and provide shade. This high-quality door awning is made with polycarbonate. Awnings have good weather resistance, safe, easy and ready to install. Specifically designed to resist weathering and rusting. Install multiple awnings for wider coverage.