Merits Dualer

ManufacturerMerits Health
ModelP312A
$4,071.00
Starting price. Your total updates as you build and is shown on the Add to cart button.
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A power chair that drives from the front wheels or the rear, and you change which by rotating the seat 180 degrees and locking it. It carries up to 300 lbs., turns inside 21", and the 5" power seat lift is included.

Weight capacity
300 lbs.
Drive type
Front or rear wheel
Turning radius
21"
Range per charge
Up to 18 miles
Overview

Front drive or rear drive, by turning the seat around

A Group 2 power chair that drives from the front wheels or the rear, changed by rotating the seat 180 degrees. Carries 300 lbs., turns inside 21", and the 5" power seat lift is included.

Watch it in action
The Dualer

Built for real life

What stands out

Front drive or rear drive, one chair

Rotate the seat 180 degrees and lock it, and the chair changes which end pulls. Front-wheel drive gets you through tight turns and over thresholds. Rear-wheel drive tracks straighter outdoors.

5" power seat lift, included

The powered elevating seat comes with the chair rather than costing extra. It raises you 5" to reach a shelf, a counter or someone's eye level.

Captain or pan seat, 16" or 18"

Four seat configurations at no charge. The captain seat is padded with a headrest, the pan seat takes your own cushion, and both recline to 135 degrees. Depth is 18" on all four.

Turns inside 21"

At 38" long and 24" wide this is a compact full-size chair, and it turns inside 21". That suits narrow hallways, older houses and tight bathroom corners.

Batteries and charger included

Two 12V U1 AGM batteries at 34 Ah and a 5A off-board charger come with the chair, and they carry it up to 18 miles on a charge.

10" foam-filled drive tires

Knobby foam-filled drive wheels with 8" solid casters, so nothing goes flat. Ground clearance is 2", which is low, so read the ground clearance question below before you order.

The Hieline Take

The Dualer is built around one idea and it is worth understanding before you decide. Front-wheel drive puts the driven wheels under you and swings the back end around, which is what gets you through a tight doorway or over a threshold, and it feels loose at speed. Rear-wheel drive tracks straight and feels planted outdoors, and it needs more room to turn. On this chair you get both, because the seat rotates 180 degrees and locks, so the same machine can be a front-drive chair in the house on Monday and a rear-drive chair on the sidewalk on Tuesday. That is genuinely useful if you have not decided which suits you, or if your two environments want different answers. The rest of it is a compact full-size chair, 38" long and 24" wide, turning inside 21", and the 5" power seat lift is included rather than sold as an upgrade the way it is on the Vision Sport and the Gemini. What you trade for the compact size is ground clearance. Two inches is low, and it is the number that should decide whether this chair suits you: it is fine on floors, carpet, sidewalks and ramps, and it will ground out on a lawn, a gravel drive or a steep lip at a curb cut. The 300 lbs. capacity and the 16" or 18" seat also put a real ceiling on who fits. If you are heavier than that, or you want to cover rough ground, the Gemini is the chair to look at instead.

Straight talk

Is it right for you?

A good fit if you

  • want one chair that works indoors and outdoors, because you can change the drive type yourself
  • live somewhere with narrow hallways and tight corners, this chair turns inside 21"
  • want a powered seat lift without paying extra for it
  • weigh up to 300 lbs. and need a 16" or 18" seat
  • want to sit back and rest during the day, the seat reclines to 135 degrees

Look elsewhere if you

  • cross grass, gravel or broken pavement often, the ground clearance is only 2"
  • weigh more than 300 lbs., look at the Gemini or the Vision Super instead
  • need a seat wider than 18"
  • want to load it in and out of a car alone, the heaviest piece is 97 lbs.
  • want a color other than Candy Apple Red
  • want to travel further than 18 miles between charges

Getting the size right

Not sure it will fit you?

Five measurements, taken at home with a tape and a firm chair, tell you whether a seat will suit you. The guide opens right here with a printable worksheet.

Five measurements · printable worksheet · no sign-up

How to measure for a wheelchair

How to measure for a wheelchair

Getting the right wheelchair starts with getting the right fit. A chair that is too wide, too narrow, too deep or too short is uncomfortable and hard to use.

You do not need dozens of measurements to get started. For most manual wheelchairs, transport chairs and power wheelchairs, the five below will get you to the right size.

Side view of a person seated in a wheelchair-style seatSide view. B is seat depth, measured from the backrest to the crease behind the knee. C is lower leg length, from the crease behind the knee to the bottom of the heel. D is back height, from the seat surface to the top of the backrest. E is elbow height, from the seat surface to the underside of the elbow.DBCE
Front view of a person seated in a wheelchair-style seatFront view. A is hip width, measured across the widest part of the hips and thighs. The dashed lines mark the outer edges of the seat, which sit wider than the hip measurement.A

Before you measure

Sit upright in a firm chair. Wear the shoes and the clothing you expect to use with the wheelchair. Have someone help you, because the measurements are far more accurate when somebody else holds the tape.

  1. Measurement A. Hip width

    Measure the widest part of your hips or thighs while seated. Keep the tape straight across your body rather than wrapping it around you.

    This is the measurement that points you at a seat width.

    Leave yourself a little room. If your seated hip width is about 19", look at a seat that gives you a small amount of clearance rather than one measuring exactly 19".

    Do not go wider than you need. A wider seat makes the whole wheelchair wider, and that makes doorways and indoor turns harder.

  2. Measurement B. Seat depth, also called upper leg length

    Measure from the back of your buttocks to the crease behind your knee while seated.

    The front edge of the seat should never press against the back of your knees. Aim for about 1" to 2" of space between the seat edge and the back of the knee.

    A seat that is too deep presses behind the knees. A seat that is too shallow leaves your thighs without support.

  3. Measurement C. Lower leg length

    Measure from the crease behind your knee down to the bottom of your heel, wearing your normal shoes. Keep your knee bent at about 90 degrees.

    This one tells you about seat-to-floor height, footrest height, legrest adjustment and footplate position.

    If the wheelchair comes with a cushion, remember the cushion raises your seated height.

  4. Measurement D. Back height

    Sitting upright, measure straight up from the seat surface to where you want the top of the backrest to sit.

    The right back height depends on how much upper-body support you need. A lower back gives an active manual wheelchair user more freedom to move. A higher back gives more trunk and upper-body support.

    If you are unsure how much support you need, call us before you order.

  5. Measurement E. Elbow height, where the armrests adjust

    Relax your shoulders, let your arms hang at your sides, and bend your elbow to about 90 degrees. Measure straight up from the seat surface to the bottom of your elbow.

    This gives you a comfortable armrest height on any chair with height-adjustable armrests.

Weight capacity

Always compare the rider's weight against the manufacturer's stated weight capacity. Never choose a wheelchair rated below the rider's actual weight.

If the rider is close to a chair's maximum, move up to a higher-capacity model.

BandCapacity
StandardUp to 300 lbs.
Heavy dutyAbove 300 lbs., up to 400 lbs.
BariatricAbove 400 lbs.

Make sure the wheelchair fits your home

Seat size is only half of it. Before you order, compare the wheelchair's overall dimensions against the places it has to go. Measure:

  • The narrowest doorway it has to pass through
  • Hallways and tight corners
  • The bathroom entrance
  • The bedroom entrance
  • Elevators, if you use one
  • Your vehicle's cargo space, if the chair travels

Check the manufacturer's listed overall width as well as the seat width. A wheelchair with a 20" seat measures considerably more than 20" from wheel to wheel.

For a power wheelchair, check the listed turning radius too, so you know it can turn where you need it to.

Your measurements

Type your numbers straight into the boxes below, or print this page and write them in by hand. When you are done, copy them and email them to us, or call and read them out.

inches
inches
inches
inches
inches
lbs.
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Need help choosing the right size?

Sizing varies between manufacturers and between models. If you are unsure which size to order, we are happy to help.

Send us your measurements along with the wheelchair you are considering, and a Hieline Medical specialist will compare them against that manufacturer's available seat sizes and specifications.

Call 1-855-HIELINE or email care@hieline.com with your measurements and the model you are considering, and we will tell you which seat size to order.

Important

This guide helps you select standard mobility equipment. It is not a clinical seating assessment. A rider with significant postural needs, pressure-management concerns, asymmetry, contractures or other complex seating requirements should be evaluated by a seating or rehabilitation professional.

Build & Buy
Color

Merits Health builds this power wheelchair in one color.

Red
Seat
Select one.What does this mean?

Two decisions here and neither one changes the price. All four seats cost the same.

Width. Sit upright, have someone measure the widest part of your hips, then add about two inches and round up to 16" or 18". A seat that is too wide leaves nothing to brace against and pushes the joystick further from your hand, so size it to the rider rather than taking the wider one as a matter of course.

Type. The captain seat is the padded seat with a headrest and it is what most people order. The pan seat is a flat base you put your own cushion on, and it is the one to pick if a therapist has specified a pressure cushion.

Both styles recline to 135 degrees and both are 18" deep. The seat rotates 180 degrees on its post, which is how the chair changes between front-wheel and rear-wheel drive.

If a therapist has measured you, their numbers win over anything here. If nobody has, use the measuring guide on this page.

Joystick mount
Select one.What does this mean?

This sets how the joystick is held. Which side it sits on is a separate thing, and it is free either way.

In-line is the standard bracket and the joystick stays fixed at the end of the armrest.

Swing-away lets you push the joystick clear so the chair pulls under a table, a desk or a kitchen counter. It comes as a left hand part and a right hand part, so pick the one that matches the hand you drive with.

Choose the side in the Joystick position step. If you add a swing-away mount, pick the one for the same side.

Joystick position
Select one.What does this mean?

This is the armrest the joystick sits on. Most people choose the side of their stronger hand. Both sides cost the same.

Legrests
Select one.What does this mean?

Dual footplates come with the chair. There are two separate platforms, one under each foot, and each flips up out of the way when you transfer.

Elevating legrests swing away to the side and raise, so a leg can be held out straight and supported. Pick these if you have swelling that is helped by raising the leg, or a knee or a hip that does not bend far. They add length to the front of the chair, which is worth knowing if the turn into a bathroom is tight.

Delivery
Included.What does this mean?

Curbside delivery is free on this chair. The carrier calls you to arrange a window and brings it to your curb, driveway or garage entrance on a lift gate truck.

Warranty
Included.What does this mean?

The warranty is included and there is nothing to add. Five years on the base frame and 13 months on everything else, from the date you buy it. The full list of what is covered and what counts as a wear item is in the Warranty tab further down this page.

Your total
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