Wheelchair Back Cushion 20x17 General Use w Lumbar Support Hydrocollator Moist Heat Cover Aspirator pump on blue base Jobst Opaque Sensitive Aspirator pump on blue base stand with carry handle * Adjustable suction from 0 22 Hg * Disposable collection jar has 800cc capacity * Overflow cutoff and hydrophobic filter to protect the aspirator pump 115V 60mHz 2 5 D Product Dims: 185 Improves seating posture while providing back support and comfort * Durable masonite board sercured on back of foam core prevents hammocking in sling back wheelchairs * Conforms to provide support to the lumbar region * Sealed liner protects foam core from moisture * Has a non slip vinyl back to prevent the cushion from sliding * Weight Capacity: 300 lbs * Limited 18 Month Limited Warranty on cover and cushion * Compare to Jay Basic Back *