Description
The Invacare Matrx MAC Backrest is the adjustable contour back in the Matrx family: a dual layer foam back whose side contours move in depth, height and width.
What does it do and how does it work?
- Dual layer foam: SuperSoft HR foam over firm HR foam, so the firm layer holds the shape and the soft layer lets the person settle into it.
- Side contours: both extensions come with the back on pivoting brackets, in 3.5, 6 or 9 in (89, 152 or 229 mm) depths; loaded inner width 5.5 to 12 in (140 to 305 mm).
- Adjustable fit: the contours move in depth, height and width, with 1/2 in of width growth each side, and can be set with the user seated.
Who is it for, and who should choose something else?
- Changing posture: for a person whose posture may change, or whose contour needs refining after the back is on the chair; on a fixed back, the shape is the shape.
- Assessment first: an occupational therapist or physiotherapist chooses the size, the contour depth and the hardware.
- Fixed contour: the Matrx Elite TR and Matrx E2 are rigid backs with a 3 in contour.
Will it fit?
- Sizes: 16, 17, 18, 19 or 20 in wide and 16, 18, 20 or 22 in long; MAC plus width and length, so MAC1818 is 18 x 18 in.
- Custom: other sizes are quoted.
- Back canes: 3/4 to 1 in (19 to 25 mm) outside diameter.
- Chair width: the hardware reaches 1 in narrower to 2 in wider than the nominal back.
- Capacity: 300 lbs (136 kg).
Using it day to day
- Hardware: EasySet is standard, with height, depth, angle and rotation adjustment; Fixed, Extended Range, Heavy-Duty and Split hardware are options.
- Power seating and heavy use: use the Fixed hardware on power seating; the Heavy-Duty hardware is for users up to 300 lb with high tone or heavy use.
- After fitting: check the fasteners and the chair's balance, because moving the back changes the centre of gravity.
- Care: wash the Meshtex cover warm up to 60 C (140 F) on a delicate cycle with neutral detergent; no bleach, softener or dry cleaning, and air dry fully.
- Warranty: two years on the back for the original purchaser, materials and workmanship; the cover is excluded.
What does it work with, and what are its limits?
- Covers: Meshtex is standard; a Startex wipeable cover is available by quote.
- Quote build: size, contour depth and hardware are settled in the assessment and priced on the quote; custom sizes are non-returnable, so read the return policy.
- Extras: the SHAPE insert, PostureFlex, BackBone and chest harness interface are separate.
How does it compare?
The Matrx Elite TR and Matrx E2 are rigid backs with a fixed 3 in contour, and the wheelchair backrests hub lists the range.
Frequently asked questions
What makes the MAC different from a fixed Matrx back?
The MAC's two side contours are mounted on brackets, so they can be moved in depth, height and width after the back is on the chair.
How is the Dual Layer Foam model different from the MAC HUG?
Both use the same adjustable side contours and hardware; the Dual Layer uses the SuperSoft over firm HR foam, while the HUG uses the StaminaFibre insert.
Can I add a headrest?
The back includes a heavy-duty headrest interface, but the headrest itself is separate; confirm the model with the clinician.
Mobility Specialties is an ADP registered vendor; see how ADP works with us.
Specifications
- Weight capacity
- 300 lbs (136 kg)
- Sizes
- Width x back length in inches: 16 to 20 wide by 16, 18, 20 or 22 long
- Construction
- Shell with a dual layer of SuperSoft HR foam over firm HR foam
- Cover
- Meshtex fabric cover; washable; extra covers and a SHAPE insert available
- Cover care
- Machine or hand wash warm up to 60 C (140 F) on a delicate cycle with neutral detergent; no bleach, no fabric softener, no dry clean; air dry
- Adjustments
- Height, depth, angle and rotation at the hardware; side contours adjust in depth, height and width
- Custom sizes
- Sizes the maker does not hold in stock are ordered by quote
- Back width
- 16", 17", 18", 19" or 20" (406 to 508 mm)
- Back height
- 16", 18", 20" or 22" back length (406 to 559 mm)
- Contour depth
- 3.5", 6" or 9" (89, 152 or 229 mm) side contours; loaded inner width 5.5" to 12" (140 to 305 mm)
- Lateral support
- Both left and right side contour extensions included; adjustable in depth, height and width with the user seated
- Mounting hardware
- EasySet hardware standard; Fixed, Extended Range, Heavy-Duty and Split hardware optional
- Fits wheelchair widths
- Back canes 3/4" to 1" (19 to 25 mm); fits wheelchair widths 1" narrower to 2" wider than the back
- Available colours
- Black
- Warranty
- 2 years, materials and workmanship, original purchaser; cover excluded
- Product type
- Adjustable contour foam wheelchair backrest
- Use category
- Postural support and positioning in manual or power wheelchairs
Figures from the manufacturer. Options and seat sizes can change them; we confirm yours before ordering.
Documents
Delivery and service
Delivery and setup
We deliver and set up equipment across Toronto and the GTA, and show you how everything works. Custom and special-order products can take longer; we confirm timing with you before delivery.
Service and repairs
Our technicians service what we sell, at home or in our shop.
Try before you buy
Visit a showroom in Etobicoke or Brampton to try products first, or book a free home assessment.
Warranty
Mobility store warranty terms
These are Mobility's purchase and service policy terms, separate from any manufacturer warranty coverage.
1 year on parts.
Read the warranty and service policy for the full terms.
Compare similar products
Other models worth a look before you decide.
Questions about this product?
Talk to our team, try it in a showroom, or book a free home assessment. We help with sizing and funding.










