7
Tower Tunnel Assembly Instructions
Install Tunnel Support Boards
1. Install (3) 2’’ x 4’’ Tunnel Support Boards to structure as shown (Fig. 2).
Note: 1-1/2’’ Screws must be inserted from outside unit, through 1’’ x 4’’ boards and into 2’’ x 4’’ boards.
Fig. 2
NOTE: Roof removed for clarity.
(2) 2’’
x 4’’ x
23-1
/4’’
2’’
x 4’’
x 34’’
23-1/4’’
1-1/2’’ screw
Use 1-1/2’’ screws from
outside barrier to
secure to 2’’ x 4’’ to 1’’ x 4’’
(4)
1-1/2’’ screws
per board
(3)
1-1/2’’ screws
per joint
