We have 3 shapes at our range.
1. "U" shaped, 48" square. 18" deep belly 24" wide. 12" on each arm.
2. "T" shape/ambi. 4" square with 18" deep belly, 16" wide. 16" arm.
3. Right hand only is 40" wide, 48" long. Belly and arm and as "t" shape.
Hope that makes sense and helps.