The Drive Medical Kanga Solid Seat Pan from Wenzelite Rehab offers a lightweight yet strong solid support base that can be used with any wheelchair cushion. This Solid Seat Pan is for chairs with a 18" seat width Aluminum seat pan reinforced with three crossbars|Secures to seat rail with fitting clamps and knobs|Notched ear corners allow wheelchair depth adjustability|Split collar clamps prevent sliding on seat rail|hook-and-loop fasteners attach the seat cushion|For 18" wide seats.