For a High Peak canopy A-frame (high angle 120-degree pitch) the tarp must be 2 ft wider than the size of the frame due to the steep angle of the pitch.
For example, to cover a 10' W x 20' L High Peak A-frame you will need a 12' W x 20' L tarp.
To provide some "flex" for wind gusts and distribute the loading force between the eyelets it is important to secure your tarp using elastic bungee cords (not included). Securing tarps with stiff non-flexible connection methods might result in tearing as the material cannot give in.
All canopy tarp sizes are "Cut Sizes" - the industry standard.
The Finished (hemmed) Size is 4"-6" shorter on each side or can be up to 2% smaller than the Cut Size.
For example, 12' x 20' Cut Size = 11'6" x 19'6" Finished Size.