High roof or medium roof for a wheelchair van: headroom, door height, and parking garage clearance

What each roof gives you inside and out

A high roof adds roughly 9 to 11 inches of headroom and 7 to 8 inches of outside height. Roof names differ by maker, so compare the published inches rather than the label. Mercedes-Benz calls its lower roof “standard” rather than “medium”, and a Ram ProMaster high roof stands only about 2 inches taller than a Sprinter standard roof. The roof comes with the chassis, so read this alongside the Transit, ProMaster, and Sprinter comparison, and the ADA vehicle requirements guide for the rest of the federal rules.

Here are the makers’ published heights for the full-size bodies NEMT converters use most:

The Transit ranges come from Ford’s 2026 spec sheet, which gives the cargo van 72 inches of cargo height under the medium roof and 81.5 under the high roof, and the passenger van 67.6 and 77. MobilityWorks Commercial’s chart for its Transit wheelchair vans uses the passenger van pair. Outside, the passenger van sits a little lower than the cargo van, and the extended high roof is the tallest at 110.4 inches. Driverge installs wheelchair lifts under all three Transit roofs, low, medium, and high. Whatever the brochure says, get the outside height of the exact van from its build sheet, then add whatever the converter mounts on top.

Door openings follow the roof. Mercedes-Benz lists the Sprinter’s side door opening at 60 inches under the standard roof and 72 inches under the high roof, and the rear door at 61 and 73 inches. For comparison, BraunAbility’s commercial Chrysler minivan conversions stand 75 to 81 inches tall overall, with 56-inch door openings, which is why they fit places a full-size van does not.

The ADA numbers behind 56 and 68 inches

The federal vehicle rules set two headroom minimums, split at 22 feet of length:

• Door clearance. Under 49 CFR 38.25(c), the overhead clearance at the door, measured up to the header from the lift platform in its raised position or from the ramp’s highest point, must reach 56 inches on a vehicle no longer than 22 feet and 68 inches on anything longer.
• Interior height. Under 49 CFR 38.29(f), the same 56 and 68 inch minimums apply along the path from the lift to the wheelchair securement location.

The U.S. Access Board’s guide to these rules explains where the numbers came from. The 56-inch figure, in use since 1986, is based on the seated height of a 95th percentile man in a wheelchair with an 18-inch seat. The guide notes that many power wheelchairs and three-wheeled scooters have higher seats, and that tall people need higher seats to sit in a posture that does not cause pressure sores. It also says the 56-inch door does not fit people standing on a lift. Even the 68-inch figure for larger vehicles clears only about the 70th percentile person with a disability, by the Board’s estimate.

Length turns the higher number into a requirement. Twenty-two feet is 264 inches. In Mercedes-Benz’s specs the 170-inch Sprinter measures 274 inches and its extended body 290, and both come only with the high roof. Ford’s figure for the extended Transit is 263.9 inches, just short of 22 feet, and Ford builds it with the high roof only, so measure the finished van before you count on the 56-inch minimums. Among these bodies, the vans that clearly cross 22 feet already come with a high roof.

Riders who sit tall or stand on the lift

Headroom problems show up with a few riders, not the average one. Power chairs with thick cushions or raised seats, tall riders, and riders who stand on the lift are the cases to plan for.

Federal rules protect standing riders. Under 49 CFR 37.165(g), a company has to allow riders with disabilities who walk, standees included, to board on the vehicle’s lift or ramp. A rider standing on a lift platform rises through the door opening. The Access Board’s guide says a 56-inch door does not fit standees, and the Sprinter’s standard-roof side door is only 60 inches, against 72 inches under the high roof.

For seated riders, three steps keep the trip safe:

1. Ask the rider or facility at booking for the rider’s seated height in the chair, measured from the floor to the top of the head.
2. Compare it with the interior height at the wheelchair position you plan to use on the finished van, not the door figure or the brochure number. Anything mounted on the ceiling takes height away.
3. Note the result on the rider’s profile so the next booking goes to a van that fits.

The power wheelchair and scooter guide covers chair weights, sizes, and securement for the same riders.

Crew room for stretcher and assist work

Crews feel the roof more than riders do. Mercedes-Benz publishes the figure as “standing height”: 68 inches under the Sprinter standard roof, which is 5 feet 8 inches, and 79 inches under the high roof, which is 6 feet 7 inches. A driver securing four tie-downs and a shoulder belt, or a two-person crew loading and strapping a stretcher, works on their feet inside the van.

If your work includes stretcher trips, check two things against the van before you buy. First, any minimum interior height in your state’s stretcher van rules, which vary. Second, whether the cot, the crew, and the rider all fit with the cot mount where the converter places it. The stretcher van equipment guide lists what several states require on board.

Will a high roof van fit in hospital garages?

Not if the garage was built to the ADA minimum, and a medium roof will not fit one either. The ADA asks for 98 inches of clearance only at van parking spaces and the route to them (2010 ADA Standards, section 502.5), and garage floors elsewhere can be lower. The hospital parking guide covers those rules and the loading zones. Set the full-size roofs against the two ADA numbers:

• Under the 98-inch van route. No medium or high roof fits. The Sprinter standard roof at 100 inches, the Transit medium roof at 99.2 to 101.3, and the ProMaster high roof at 102.1 are already over it before anything goes on the roof.
• Under the 114-inch loading zone. Section 503.5 keeps 114 inches above an accessible passenger loading zone and its drive in and out. Every roof here clears it: the Sprinter high roof by 7 inches (3 with all-wheel drive), and the Transit high roof by 3.6 to 6.3 inches, depending on the body.

So the taller roof costs you little at the curb and a lot in garages. Length matters at the curb as well. Section 503.2 sizes the loading zone’s pull-up space at 20 feet long, so a 144-inch Sprinter at 234 inches, about 19.5 feet, fits inside it, and a 170-inch Sprinter at nearly 23 feet does not.

Three habits keep a tall van out of trouble:

• Measure the finished van at its highest point, including any roof-mounted air conditioner, antenna, or light, and post the figure on the dashboard.
• Record the posted clearance of every garage, canopy, and drive-through entrance your regular riders use, in the trip’s pickup instructions.
• Send the tall van to the hospital’s main loading zone rather than its garage unless you know the garage height. The airport wheelchair transportation guide covers the same problem at terminals.

What the taller roof costs

The purchase price barely moves. Wisconsin DOT’s 2027 estimates for its Section 5310 vehicle program, based on its 2026 procurement, put a rear-entry high-roof wheelchair van at $88,350 against $87,004 with a medium roof. The side-entry versions are $88,560 and $87,214. Both gaps are $1,346, for the same seating and wheelchair layouts.

On the bare van the gap is wider. Mercedes-Benz prices the 2026 Sprinter cargo van with the 144-inch wheelbase at $48,990 with the standard roof and $52,540 with the high roof, a $3,550 difference. The high roof adds 77 pounds of curb weight, 4,916 pounds against 4,839, and payload drops by the same 77 pounds.

Fuel is harder to pin down, because these vans carry no EPA mileage label to compare (the minivan or full-size guide explains why). If you run both roofs, log each van’s fill-ups against its odometer for a month and compare.

Picking a roof by the trips you run

Match the roof to your hardest regular trip, not your average one:

• Seated riders in manual chairs, short city trips, frequent garage pickups. A medium or standard roof, about 68 to 72 inches inside, usually does the job, and the van stays lower.
• Tall riders, heavy power chairs, or riders who stand on the lift. A high roof, with 76 to 81.5 inches inside and a taller door.
• A body over 22 feet. A high roof, because the 68-inch door and interior minimums apply, and a medium-roof door falls short (60 inches on a Sprinter standard roof).
• Stretcher work. A high roof, so the crew can stand while securing the cot.

A fleet with two full-size vans can split the work with one of each.

Putting the tall van on the right trips

In HealthRide, each van’s seats, wheelchair spaces, and stretcher space are entered once, and every trip’s wheelchair, stretcher, or oxygen need is matched against what each van carries. Ryder Go plans the whole day in one click, and a dispatcher can still drag a tall rider’s trip onto the high-roof van on the dispatch board in one motion. The fleet page shows how each vehicle is set up.