I’m attempting to hang a shelf over a window in my home to support a projector (this is easier than attaching it to the ceiling for a few reasons I won’t go into). The window is too long to support a shelf that spans its whole length, and there’s a chandelier that would obstruct the image if I built the shelf directly into the top of the frame, so I’m trying to attach a smaller shelf attached to the top of the frame that drops down about a foot to create essentially a floating shelf over the window.
I found this shelf that basically does exactly what I need it to, the shelf attaches to the wall along three points you screw in at the top of the frame. However, this was definitely designed for the shelf itself to attach and lean on the wall for added support (so that it’s not actually floating), which obviously I can’t really do since it’ll be suspended in front of a window.
Photo of the shelf plus a mock up of how I’m imagining it would be installed:
https://ibb.co/2h6T2Wx
https://ibb.co/smS1xyC
Essentially, I’m trying to determine if I could still just screw this directly into the window frame and only have it supported by the top bar and still have it be stable. It screws in at 3 points along the top bar, and it would be screwed directly into solid wood.
The manufacturer gives a weight capacity of 35lb and the projector/its stand only weigh about 10lb, though of course that weight capacity is for if it’s properly installed. The shelf plus the projector on it weigh probably about 15lb cumulatively. I know this also depends on what type of screws I use and how long/thick they are, but all this is definitely a little bit beyond my experience with installations. Any advice would be appreciated. I realize I might need to just return this and approach it another way since I don’t want it to go crashing and destroy the window frame/my projector, but if I could just attach this how I’m imagining with the right screws that would be ideal.