I'm trying to mount a 50 inch TV (25 lbs) over a fireplace using a Sanus tilt mount. The previous homeowner had a TV mounted over the fireplace so I assume it's doable, but I'm not sure what the size and weight of the TV were as well as the type of mount and hardware they used.
I've located the studs and their centers. Based on what I read these are furring strips, but I'm not sure. They are 3 and 1/4 inch by 1.5 inch. The depth of the drywall is 1/2 inch. So I can work only with 2 inch (1/2 inch of drywall plus 1.5 inch of the wood) of the width of the wall to secure the mount to. I don't know what's behind the studs, there seems to be at least 1 inch of void after the studs. The supplied lag bolts are a little over 2.5 inch long, so if I use them, they'll be extending 1/2 inch from the wood into the void.
The manual asks for minimum of 3 and 1/2 inches of the depth of the wood, while these studs are only 1 and 1/2 inch deep.
Given the fairly light TV (25 lbs) plus maybe another 10 lbs of the mount, would it be safe to mount this using the existing hardware? Also it's a tilt type mount, so less load comparing to full motion mounts, if I understand that correctly.
Please let me know if this hardware will suffice for this amount of load, or I need to find another type of bolts.