35 x 56" inside back size, with a frame 1 3/8" wide by #1 5/8" high. We usually use Z-bar on larger frames, and sometimes, big 3-hole D-rings, straight up on the frame legs near the top, on either side, with no wire. But, this guy wants a wire. I've always avoided D-rings at angles, as they get weird over time, so on a few like this in the past, have used 4-hole straight Supersteel straphangers, with 100 lb. wire. But, after a recent Grumble thread about those being dicey for heavy things (i.e. cutting the wire), I'm trying wide Flanger hangers. The part the wire goes through is rounded and smooth, so that seems better. But, it has to be screwed so close to the inner edge, that it makes me wonder about hold. We've attached these 4 with 1/2" screws and plan to kite it with 100 lb. wire. Will these big Flanger hangers be okay? The whole piece weighs less than 30 lbs., so hopefully, will be fine.