QuickEscape Fire Escape Ladder, 2 Story Portable Emergency Ladder 3-pack, 12-Foot, Sleeves on Chain, Standoffs on Every Rung, LP3QFL12SL 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