ResQLadder Fire Escape Ladder, 2 Story Portable Emergency Escape Ladder 3-pack, 15-Foot with Sleeves on Chain, LP3FL15SL Portable; no installation necessary Tested to support over 1000 lbs. Designed to fit standard windowsill Easy to install or remove standoffs provide added stability for every rung while allowing flexibility to avoid a variety of wall obstructions or hazards 100% Made in USA