200 lbs. French Cleat Picture Hanger with Wall Dog Mounting Screws (1-Pack)

yes! Remember STUDS

It could, but you should just buy a shorter one that would service your needs? If you just had to cut it, a metal cut-off blade or a hack saw.

This is old, but others may have the same question. This may not be a good idea. The weight ratings on a picture hanger likely assume that the hanging item is very flat and close to the wall. A very flat object would mostly just pull straight down on this hanger. A mantle sticks out from the wall - it's cantilevered. This loading requires both the straight vertical force and also forces to compensate for the offset or extension of the part. The additional forces needed are something to pull the top of the mantle back against the wall and something to push it out at the bottom. You can hold an object up a wall and simulate bending/tipping it down to see it separate from the wall at the top and push into the bottom. OR hold something like a heavy book or board out. You might be able to feel the need to pull back the top and push out against the bottom. That said, it may still work. If you were to try it, I would recommend putting the cleat up as high as you can on the back of the mantle. That way it's most effective for that force to pull the top back against the wall. Another issue is that if you bumped it, it could fall off. It is just being held down by it's own weight. If someone stood up after tending the fire and bumped their head it could very well knock the mantle off of the cleat. You might be able to fix this with something extra fastened to the wall above it to stop is from lifting up. Also as others mentioned, you would need some space hollowed out in the back of the mantle for it to fit inside. Otherwise it'll hold the mantle off of the wall by the thickness of this system. I think the better solution here is a floating shelf bracket. Or metal threaded fasteners that thread into studs in your wall and slide into holes in the mantle. Or you could do decorative brackets or corbels to hold it up.

The metal is 18" long, and the packaging is 20.9" Of course, they don't mention that on the website.

I was impressed with the 1 1/2" screws that were well suited to just penetrate sheet rock only. I was lucky to hit a stud on each mirror I hung, so it really felt secure. The small screws for mounting the cleat to the mirror were more than adequate.

Mirror clips.

Available in 18, 30 and 42"

I would say yes. If it is old plaster and lath....use regular sheet rock screws...

its about 2.5", no more than that

Hi and thank you for your inquiry. We do not recommend you use this item in plaster walls.