Fire Escape Ladders Dyne, Fire Safety, Safety & Security, Tools & Home Improvement Dyne, Inc. 3 Step “Ultra Protect” Egress Basement Window Well Escape Ladder 3ESL Review by CheatingMutant July 19, 2018 No Comments Constructed using lightweight aluminum angle and includes anti-slip safety tape for the stepping surface Designed for steel corrugated window wells measuring 42 in. to 54 in. in depth 3 Step “Ultra Protect” Egress Basement Window Well Escape Ladder