PART #4101-0390 measures 141/2” tall, floor to center of carpeted bunk and can be adjusted in for stand up watercraft (17” center to center of one bunk to the other), or adjusted out to 23” wide for runabout models 1,400 lb. capacity
PART #4101-0391 has four pieces 9 1/2” long; raises height of watercraft for shop use (20 1/2” tall, floor to center of bunk), or staggered one side to angle watercraft for showroom/ sales; replacement wheels sold separately
