EXTRA WIDE MAKING IT PERFECT FOR WALKERS & WHEELCHAIRS: 31 wide inside (outside width 31-1/4), 72 long. Designed for manual and power wheelchairs with a anti-slip high-traction tape to conveniently access porches, curbs, steps and landings. Note: May not work for some door thresholds. HIGH WEIGHT CAPACITY: Durable aluminum construction supports up to 600 lbs capacity making it perfect for heavy scooters and electric wheelchairs. SAFE, LIGHT, AND PORTABLE: Includes safety pins and a built-in carrying handle. The safety pins keep the ramp locked when folded and anchor the ramp to the step when in use. The holes for the pins will need to be drilled. DO NOT use ramp unless ramp is anchored down. RECOMMENDED USE: Maximum height rise for unoccupied wheelchairs and scooters is 18. Maximum height rise for occupied wheelchairs and scooters is 12. Make sure to look at the Ramp Selection Reference image before purchasing. COMPACT: Folds to 36(L)x16(W)x3(H) for portability in cars or to store away when not in use. Ramp Weight: 35 lbs. Assistance may be needed to lift the ramp. Ramp arrives fully assembled, no assembly required.