The box frame was made out of two 2x8x8 pressure treated boards and the doors were made out of pressure treated decking and cost about $150.
We used two 2x8x8 pressure treated lumber and cut 40" off each board to be used as the sides. The remaining length of each board was about 56" (slightly less due to blade width from initial cut off of each board. We placed the 56" boards between the side boards for an overall width outside to outside of approximately 59".
We used a 2x4x10 and cut two lengths slightly less than 56" to be at the top and bottom of the inside dimensions which were lag bolted into the wall. The box frame was then attached to the cleats using decking screws and L brackets.
We used regular pressure treated decking for the doors (approx 6" wide) . We used five - 8 foot boards for the vertical doors and cut 10 verticals at 36 1/2" each. We ripped the remaining two decking boards at 3" on the table saw for each "Z". Each door is 27 1/2" wide when finished.
From each 3" ripped board, we cut two lengths of 27 1/2" and had enough left over from each board for the diagonals which we cut and fit in place last. We placed two of the 27 1/2" cut boards on the ground and started attaching the verticals from what would be the inside of the door. We made sure everything was squared up and the spacing of the five verticals was even across the top and bottom of the "Z". Last we cut and fit the diagonals in place and attached them to the inside. We made the second door following these same steps.
Our doors fit inside the box frame and the outside "Z" boards are flush with the front of the box. We attached the barn style hardware on the inside of the box frame because the style we chose had a slightly wider hinge than our 1 1/2" sides of the box frame and would have stuck out on each side. We did have to notch out a section on our inside of the box frame to accommodate the hinges being attached on the inside. Because we had the box frame built before we added this hardware, we could not attach the hinge screw from the inside where we sandwiched the hinge between the sides and top/bottom. Before we attached these hinges, we put the hinge on the outside to use as a guide and made a mark with the pencil where the screw should line up, then we screwed decking screws from the outside of the frame in these holes. We attached the decorative piece to the front of each "Z" and added a latch to the front as well as some latches on the inside top and bottom of the left door. To keep the doors from touching the TV and staying flush with the outside box, we added some 2x4 blocks to the inside of the box on the top and bottom. Next, we added a steel bolt to the inside top and bottom of the left door. The latch that we bought did not keep the doors closed because both doors could open.
We purchased a fairly cheap TV because it's outside and also didn't want to spend a ton in case it was ever stolen. Depending on how deep your TV is, or the wall mounting brackets you purchase, you may need to use 2x10x8 boards for the box frame.
1 - 2 in. x 4 in. x10 ft. Pressure Treated Lumber - $5 (used for cleats)
7 - 5/4" x 6 in. x 8 ft. Pressure Treated Decking - $6.50 each (used for doors)
4 - 8" Heavy Duty Black T Hinge - $8 each (bought from Lowes - Stanley-National Brand)
1 - Hardware Slide Bolt Latch - $5 (bought from Lowes - Stanley-National Brand)
2 - 4-in. Steel Bolt - $4 each (to be used to lock one door into box frame, other door will have Slide Bolt latch)
Decking Screws (various sizes, longer screws used to build box frame, shorter screws to build doors)
8 Lag Screws - $3-$4 each (used to attach cleats to house, buy at least 6" exterior use lag screws)
4 - 4 in.Flat Brace (L Brackets) - $3 each (to be used to attach box to cleats)