EASY COOPS Chicken Coop Plan 20x40 Assembly Instructions Manual page 14

STEP 11
Install Plywood for the Back Wall Nesting Box
11.1 Cut sheet of 5/8" plywood for the nesting box sheathing using the drawing below as a guide.
You will need two 1' x 4' sheets and one 1' x 3'-9 1/4" sheet for the floor and nine 1'- 1 1/2" x 1'-4
1/2" sheets for inner partitions.
11.2 Secure the plywood with 1" wood screws.