BPRS417 Size: 4" L x 17.875" W Features: -Available in 3", 4", 5", or 6" (36", 48", 60", or 72").-Three interlocking lightweight ramp sections.-Additional panels can be used to increase ramp widths.-Anti-slip high traction surface.-Accommodates wheelchairs and scooters with various wheel configurations. Construction: -Durable welded construction. Dimensions: -Overall dimensions: 36" - 72" H x 17.875" W x 3" - 6" D.