Sil-Eco Half Size Mat Silicone Bread Baking Liner, 11-5/8" x 16-1/2" Silicone bread baking liner fits standard 13 by 18-inch perforated half sheet pan Silicone non-stick surface is darker to promote even browning Perforation allows moisture from dough to seep through to provide perfect crust Distribute heat evenly for baked perfection; use with perforated tray for air flow NSF, FDA and Kosher certified; heat safe to 480-degrees fahrenheit