Four Story Buildings Home | Shopping Cart | Checkout Fire Escape Ladders & Safety Resources ResQLadder Strength-Tested Escape Ladders for Commercial Use Protect the people in your... ladders are strength-tested to hold up to 1000 pounds. Our escape ladders are made in the USA and have metal standoffs for added stability for every step. ResQLadder 35' 4 Stories... Designed for four story buildings, the ResQLadder 35 is durable and safe, chain tension tested up to 1000 pounds with slip resistant rungs and standoffs for stability and comfort...