Heavy Duty Double Adjustable Knee Brace is for bigger treehouses with heavier vertical and horizontal loads. This Bracket adjusts both ways in and out and up and down, it adjusts to the angle of the tree and the distance between Garnier Limbs®.
For the top GL®, you need at least 12" of perch we recommend the 24" GL® with 14" perch, with some builds you may be able to use 18" GL with 12" of perch. For the bottom GL® use at least 12" GL® with 6" perch.
All of our Brackets and Knee Braces are designed to fit a 1 1/4" diameter GL
( GLs are sold separately )