Asymmetrical rail volume. One side is more positive than the other. Available in various lengths. Width x Height x Length
Pictured above with "Trips"
Last picture is in use at Elevation Climbing Gym in Utah. Trips, Trips Big, and Trips XL
 
S24- 10"x9"x24" $150
S30- 10"x9"x30" $180
M36- 10"x9"x36" $200
M48- 10"x9"x48" $225
L60- 10"x9"x60" $275
L72- 10"x9"x72" $350
XL84- 10"x9"x84" $390
XL96- 10"x9"x96" $420
XXL120- 10"x9"x120" $720
XXL144- 10"x9"x144" $840