The classic 8x12 world standard
USA Climbing Head Coach Josh Larson. Josh directed the brilliant layout of the Grasshopper Board
Cece Kopf at the USA Climbing Training Center
Ben Hanna at Pusher / Grasshopper HQ
Nathaniel Colman on the Grasshopper Board
Central Rock Gym, Cambridge
Ally Dorey at Pusher / Grasshopper HQ
Dual (16' x 12') spray wall set by Josh Larson and Ben Hanna at the USA Climbing Training Center
Chris Sharma sampling a Tension setup on our Master 8x12 Freestanding OG Crank
We can send your contractor or you a specs list to determine if your building can support a hanging Master wall. Generally, you need a bearing wall with a header or a concrete structure to mount the pulleys to.
You need 13.5 feet height to get the wall to 20 degrees. But if you don't mind it steeper, 12 feet gets you to 30 degrees.
We recommend 13 x 13 feet of padding/landing space.
With 2 people, it takes around a day or less.