
If you want to use the butterfly clip, please note that it can only be installed on a hollow wall, and this hole is huge. It is better to use the largest drill size. Don't do that to my ceiling. I ended up just using a screw on the inside and drilled a gaping hole on the outside of the house to use the butterfly clip, but to be honest the hook covered the hole. The instructions are online here, I didn't like them. I couldn't enlarge the fine print and the size listed on the cotton is wrong. I had to drill a much bigger hole. hope it lasts

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