If its is just Bi-fold, Salice has a system, Concertina that works really well. If it is Bi-fold and pocketing, Hafele has a system, Hawa. The Hafele system is expensive, thousands of dollars and it is very difficult to install. We have used both.
I've done quite a few TV cabinets with bi-folding doors, most were also pocket doors. As Rich says, butt hinges work fine for the bi-fold, mounted on the back of the doors. I normally use non mortise hinges, 2 or 3 depending on the height.
If they also need to be pocket doors, there are several options. If your doors are 3/4" thick, the Accuride 1332 slides are not expensive, fairly easy to install, and work well. They use a length of cable wrapped around a couple of pulleys to prevent racking when the door is extended or retracted. That's what I used for the piece on the photos. If your doors are thicker and/or heavier, the KV rack & pinion slides are a good choice. They do take twice as long to assemble and install as the Accurides.
I haven't used the Salice or Hafele hardware that Paul mentions. I've had good results with both the Accuride and KV systems, no call backs in the 20+ years I've been using them.
What you show here is what I want I also ran this on another form and a guy was showing me the same thing that you have done. This is my choice I am going with. I may check out the acuride I believe they will be less money then the KV that he used although his KV has 2 hinges top and bottom. Thank you so much.
Chris - keep in mind that the Accuride & KV slides are not full extension, you lose about 4" of travel no matter what length slide you choose. The width of the bi-folded doors and the interior depth available in your cabinet are important to factor in when choosing the length of slide to use. I've had to make tri-folds a few times because the cabinet was not deep enough for the slide length needed for a bi-fold.
Yes that is going to be a problem right now the doors are going to stick out about 5Ē unless he lets me make the cabinet a few inches deeper itís going to hang on the wall not have no floor support so he is not wanting it very deep.
When wall mount TV's arrived, I did several cover-ups for designers.
These were 4 doors, conventional butt hinges in a bifold configuration.
The cabinets were shallow - 4-6" deep. When built and set, they were 3/8" deeper on the bottom than the top. This caused the doors to either lay flat in the cabinet (inset or overlay), and to fold open and lay back parallel to the wall. No magnets, no catches, nothing but physics.
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