Established 1997

1-800-320-7140

A-4 Ultra Lightweight Wheelchair

item #: 34862

sku : TA4

brand : Invacare

A-4 Ultra Lightweight Wheelchair

$1,400.99
List price: $2,200.00

Built to Order Ships in 1-2 weeks

Quick Overview

  • Curved rear frame is more compact, easier to transport, and sporty looking
  • Infinite adjustment of center-of-gravity along the frame

Description

Whether this is your first chair or not, the A4 Ultra Lightweight Wheelchair can be set up very stable or easily adjusted for maximum performance. The new super lightweight titanium frame is more compact and easier to transport, while the curved rear frame is sporty looking. The camber tube clamp assembly allows you to fine-tune the center-of-gravity in an infinite number of settings. Plus, with rear seat-to-floor height adjustments in 1/2" increments and an adjustable-angle fold-down back, you can set your optimum position to ride in style. And it comes with Invacare's patented camber technology, so you can change the camber in seconds. About the only thing we didn't change is the legendary performance. It comes standard with every new A4. Imagine that-the adjustability you need and the performance you want. You wouldn't have it any other way.

Features

  • Curved rear frame is more compact
  • Adjustable rear seat-to-floor height
  • Simple, infinite adjustment of center-of-gravity along the frame
  • Improved adjustable-angle fold-down back
  • Full suspension option
  • Free Shipping
  • FixedTubular Footrest

Specifications

Weight Capacity 300 lbs.
Product Weight 24.5 lbs.
Seat Width 12" - 22"
Seat Depth 14" - 22"
Seat-to-Floor Height 15" - 21"
Overall Width 20" - 29"
Frame Color Black - Yellow
Front Wheel Size 3" - 6"
Rear Wheel Size 22" - 26"
Axle Type Quick Release
Armrests Desk-Length, Full-Length
Back Height 10" - 20"
Upholstery Type Nylon
Upholstery Color Black
HCPCS K0005
Warranty on Frame Lifetime Limited
Shipping Weight 45 lbs.

Customer Reviews

Configure your A-4 Ultra Lightweight Wheelchair

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It's important for the wheelchair to be fitted properly and be as narrow as possible while maintaining comfort and safety.

This will insure the best performance for navigating tight areas both inside the home as well out in public spaces.

A wheelchair that is too narrow or too wide can cause discomfort. When too narrow, a wheelchair can become restrictive and increase the likelihood of pressure sores, while when it's too wide, becomes more difficult to push due to the angle of the arms from the shoulders to the wheels.

To determine the necessary seat width, measure the rider's widest area of the body and add one inch. This will allow for optimum seat width while maintaining ideal usability, comfort and safety.

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Front seat height is measured from the front of the seat to the floor.
Standard seat to floor height is 19.5". Hemi height (a lower seat) is usually 17.5

 

To determine the appropriate seat height, measure from the bend of the knee to the bottom of the foot. Subtract the height of the seat cushion if one is being used. If the wheelchair is not being self propelled by the feet, also add about 2 inches to allow for foot clearance.

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To determine a chair's back height, measure from the seat upholstery (at the seat rail) to the top of the back upholstery.
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Rear seat height is measured from the back of the seat to the floor.

A chair's rear seat-to-floor height is most commonly set at a height 1" lower than the front seat height.

The rear of the seat is generally set at lower height than the front of the seat to prevent sliding forward.

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Armrests are mostly a matter of personal choice, but most often users without much mobility appreciate armrests to help alleviate shoulder and back stress. Armrests also provide additional stability for users with limited upper body balance and are helpful when navigating in and out of the wheelchair. Additionally, armrests allow users the ability to do pushups, helping relieve pressure as well as protecting clothing from the wheels.

When armrests are not fitted properly the wheelchair can become more difficult to push. Not all armrests are adjustable. Height should be fitted to allow the forearm to rest fully on the armrest without pushing up on the shoulders. For users who sit at a table or desk, swing-away armrest can beneficial.

There are four basic types of armrests:
1. Full length, fixed height (entire armrest is padded with a non-adjustable height)

2. Full length, adjustable height (entire armrest is padded with various height seetings)

3. Desk length, fixed height (partial armrest is padded for easier access with tables, non-adjustable height)

4. Desk length, adjustable height (partial armrest is padded for easier access with tables, various height seetings)

Armrest that can be easily removed or flip up and down gives users the choice of when to use the armrests.

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It's important for the correct wheel size to be used to insure maximum long-term comfort and ease of use.

Wheel size affects your height from the floor and the relationship of your arms to the wheel rims for pushing.

There are two types of rear wheels, Spoked Wheels and "molded" Mag Wheels.

1. Spoked Wheels are made of metal and are similar in appearance to that of bicycle wheels. The number and size of the spokes affect durability, shock absorption, weight, and performance. The more spokes, the more stable the wheel will be.

2. Mag Wheels are made of molded plastic or a composite. They have a small number of wide molded spokes that are an integral part of the wheel. Mag wheels are more durable, require less maintenance, and usually weigh more then spoked wheels.

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Rear wheels are critical to the performance of a wheelchair.

There are typically three types of tires:

1. Pneumatic (air-filled) tires provide a softer ride, but need to be kept inflated. Because pneumatic tires are softer than urethane tires, they are harder to push, with more resistance to the shoulders.

2. Pneumatic Flat Free (foam-filled) tires provide a stiffer ride compared to air-filled tires, and will never go flat.

3. Urethane (solid, flat-free) tires provide the quickest and stiffest ride. And they will not go flat.

Tire Tread also affects the wheelchair ride. Tires with very little tread offer a quicker ride and turn more easily because there is less rubber in contact with the ground, causing less friction. "Knobby" tires with deep treads are helpful on unpaved and rougher surfaces, yet offer less maneuverability. A 1 3/8" treaded tire is a good basic tread for everyday use.

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Easy to overlook, casters are critical to the performance of a wheelchair. Casters are the small front wheels of the wheelchair. They allow the wheelchair to steer and turn in any direction by rotating on its vertical axle.

Casters typically come in sizes from 3"" to 8"". The smaller the caster the better the maneuverability of the chair and the less likely it is to shimmy. But smaller casters on unpaved surfaces, riding in and out of elevators, or passing over street grates can be more problematic. Smaller casters are typical of chairs used for sports like basketball, which is played on an even, hard surface, yet their maneuverability makes them popular for everyday use. 3"" casters require the most riding skill and may not be the best choice for a first time wheelchair user.

The large 8", pneumatic (air-filled) caster provides the softest ride and easily rolls over bumps and raised surface, yet makes propelling the chair more difficult. Because of their size, 8"" casters can be an obstruction coming into contact with furniture or the rider's foot. Pneumatic tires need to be kept inflated with the correct pressure, and are capable of going flat.

4" to 6" casters offer a good combination of maneuverability, performance and ease of riding over surface obstructions. Composite (airless) casters offer better durability and quicker ride, while pneumatic casters provide a softer, slower experience.

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Camber Angle is the off-vertical tilt of the rear wheels. It is adjusted to control maneuverability, speed and stability.

The greater the camber angle, the further the distance between the bottom of the rear wheels and the closer the distance between the top of the wheels. Increasing the camber angle provides the rider with increased maneuverability and stability, but also increases the overall width of the wheelchair.

Typically 0-3 degrees of camber is considered standard for everyday use to accommodate narrow doorways and aisles. A higher camber angle is useful for sporting activities such as basketball where added stability and maneuverability is desired.

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Wheel locks, also known as brakes are used to keep the wheelchair in a stationary position, for example, while traveling on public transportation and for safe transfers in and out of the chair.

Using wheel locks as a braking device can cause injury and excessive tire wear and should never be used in this manner.

There are various types of wheel locks available:

1. Push-to-lock wheel locks are the most common. The break is engaged by the rider pushing forward and applying pressure with the palm of their hand until the lever snaps into position.

2. Pull-to-lock wheel locks work in the same manner as the push-to-pock except the lever is pulled forward. For some riders, it may be easier because it does not require as much upper body mobility needed to push the lever away from the body.

3. Swing-away, low-mount and under-mount wheel locks work in different ways depending on the style. These wheel locks help you avoid hitting your thumbs when pushing directly on the tires by mounting the wheel locks away from this range of motion. Due to its location, some riders with limited mobility may not be able to engage these wheel locks.

Wheel lock extensions provide a greater lever arm to apply and remove the locking mechanism, making the wheel locks easier to engage for a rider with decreased upper strength.

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$1,400.99
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