The longest dynamic footrest is approximately 21 inches from the seat pan to the footplate. This will vary depending on the type of wheelchair, as some receivers sit above the seat pan and will affect the overall length.
VERY IMPORTANT: when using the longer length dynamic footrests, the seat to floor height of the wheelchair must be considered. The dynamic footrest will extend (telescope) up to 1.5 inches. Therefore, overall length of the dynamic footrests on the wheelchair equals the leg length PLUS the 1.5” telescopic movement. This must be within the available seat to floor height. Additionally, the knee angle becomes very important to consider as a longer length can be used at a 60 degree angle than at a 90 degree angle.