EASY COOPS Chicken Coop Plan 6x6 Assembly Instructions Manual page 15

STEP 12
Assemble The Roost
12.1 Assemble the roost using 1 1/2" x 1 1/2" and 1 1/2" x 2 1/2" pressure-treated
material. You will need two boards cut to 3'-8 1/4" and three boards cut to 4'-1".
12.2 Connect the beams with 2" wood screws.
12.3 Install the roost at the studs with the help of 3" screws.