Great for old cans. Self tapping screws worked fine. Just marked the spot and drilled in screw. Same for the other side, I pretty much eye balled placement of 2nd piece across with out getting carried away with measurements and it worked just fine. Only complaint is the cost, hope more companies start producing these to see more competitive pricing. Don’t spend anymore on "fancier/more sturdy” looking ones, these will work even for heavier aluminum trims like mine.
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