Door threshold ramps to easily cross all types of door thresholds in a wheelchair.
Sliding Door Threshold Ramp - HandiRamp
Amazon.com: Wood Entry Ramp for Home Doorways, Wooden Non Slip Door Step Ramp, Mobility Threshold Ramps for Wheelchair/Bike/Scooter, for Seniors/Toddlers/Pets (Size : 30×33.8×13cm) : Health & Household
Doorway Threshold Ramps for Wheelchairs, Walkers, Scooters