One, used Aquila Airpulse PK alternating pressure (pressure relief) wheelchair Seat Cushion System. Designed to prevent and allow for quicker healing of pressure-related wounds. (pressure sores, pressure ulcers, etc.)
Just recharged the batteries, appears to be functioning as expected.
Dimensions:
16-1/2" x 16-1/2"
Made in Holman, WI.
Includes:
Cushion with 2 covers
Power Supply/Charger (3P30-L3016)
Controller/Display
I believe they consider this the APK-BA model.
When new from Aquila Corporation, the cushion's "Discounted VA Price" was: $1,995.00