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microAIR Alternating Pressure Mattress-MA51

microAIR Alternating Pressure Mattress, Invacare MA51

microAIR MA51 Alternating Pressure Mattress

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microAIR MA51 Mattress Alternating Pressure Mattress.

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List Price: $1,495.00
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Product Code: Invacare-MA51

microAIR MA51 Alternating Pressure Mattress

microAIR Alternating Pressure Mattress Replacement with 10 LPM Compressor

Economical alternating pressure mattress replacement system

The microAIR APM provides pressure relief in the prevention and treatment of pressure ulcers.

This microAir MA51 is a Group II support surface has a 350-lbs weight capacity. Mattress height is 8" with 6" bladders and 2" foam top cushion..

This microAIR Alternating Pressure Mattress has 16 horizontally configured bladders. Mattress will not bottom out with mattress hose attached to the compressor power unit.

microAIR Control Panel:

MA51 Control Panel

microAIR Control Panel. Treatment times are 5, 10, 15, and 20 minute cycles.

Alternating Pressure Mode:
The alternating pressure times indicate the frequency of deflation or inflation of half of the air cushions (even or odd numbered). For example, 10 minutes is selected. In this example, the even numbered air cushions in the mattress will deflate, while the odd numbered cushions remain at constant pressure. When 10 minutes has elapsed, the even numbered air cushions will inflate while the odd numbered cushions remain at constant pressure. When 10 minutes has elapsed again, the odd numbered air cushions deflate while the even numbered cushions remain at constant pressure. The air cushions continue to inflate or deflate like this as long as an alternating pressure time has been selected. At all times, half of the air cushions remain at a constant pressure when an alternating pressure time has been selected.

Static Mode:
all air cushions in the mattress are maintained at constant pressure. The Static LED is illuminated GREEN.

Minimum Pressure Setting:
The minimum pressure setting during Alternating Pressure is set to 0 (2 mmHg) at the factory. This means that the mattress will deflate as much as possible during the deflation time when using 10, 15 or 20 minute Alternating Pressure times. The setting can be changed so the mattress will only deflate to 50% of the selected pressure setting.

Press the Fowler button to activate the patient Fowler Mode. When this mode is activated, the control unit increases the pressure in the mattress to prevent the patient from bottoming out .

microAIR Mattress:
The waterproof cover is made of non-shear nylon and has nylon tie down straps with buckles for attaching the mattress to the bed. The mattress has a 16 bladders, each bladder is 6" in height. In addition, there is a 2" foam safety pad under the nylon cover.

This microAIR mattress has a non-skid bottom and is secured with 10 nylon web buckled hold-downs. When rolled up for storage, carrying handles allow for easy transport.

Standard Hospital/Homecare Bed Size:
MA55 on Hospital Bed
Affordable with added comfort, this alternating pressure mattress is available in the standard 36" x 80" size (Twin XL).
  • 350-lb weight capacity
  • Quilted 70 denier nylon cover helps protect user from friction and shear.
  • Non skid bottom as well as 10 nylon web buckled hold downs secure mattress to bed.
  • 10 LPM compressor has alarm, alarm silence, and lock out features
  • Treatment times are 5, 10, 15, and 20 minute cycles
  • Dimensions: 36" x 80" x 8"
  • Product rolls up for easy storage and handling. Attached over-shoulder carrying strap makes for easy transport

MA51 Owner's Manual

(Adobe® PDF format)

Return Policy for microAIR MA51
This product has a limited 30-day return policy:
  • The mattress must bed unused
  • Mattress is not returnable if package/seal has been opened
  • Product must be returned in original packaging and at customer's expense
  • Restocking fees apply

If you have questions about this product or need qualified help choosing options please call us at 1-866-722-4581.
See the full Return Policy here: Return Policy
Invacare MA51 Warranty
  • 1 Year mattress
  • 2 years on power unit

If you experience any problem with your MA51 Mattress at any time regardless of the stage of your warranty, please contact us and we will make every effort to help you.

This warranty applies to the original purchaser and must be purchased from an authorized Invacare supplier.


Typical Use:Prevention and treatment of pressure ulcers
Warranty:2 years on power unit, 1 year on mattress
Product Weight Capacity:350 lbs
Flammability:16 CFR 1632 and 16 CFR 1633
Overall Height:8"
Overall Width:36"
Overall Length:80"
10 LPM


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