QuickEscape Fire Escape Ladder, 3 Story Portable Emergency Escape Ladder, 20-Foot, Standoffs on Every Rung, QFL20 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