Shimeyao 6 Pack Ceiling Round Cover Plate 20 Pcs M3.5 Screws 5" Junction Box Covers Holes Spaced 3.5" White Round Blank Cover Flat Electrical Covers for Fan Ceiling Light Junction Box Switch

Didn't fit; had to return them.

Super thin and flimsy

Flimsy but worked ok

Cheap and flimsy plastic but looked good walking past which is guess is the point of them.

For the 4.3" cover plate the description says, "distance between the 2 screw holes is about 2.7 inches". However the drawing shows a 2.5" distance. Which is correct? 2/10" difference results in these not fitting the outlet box.

These covers have some good points and bad points. On the good side they are thin and flexible. This allows them to let wires to pass out without major modifications to the cover. Also they can easily be cut with a good pair of scissors allowing them to fit in tight spaces. On the bad side they come with M4-0.5 screws (the description says M3-0.5 which would be even smaller) with a cone shaped neck witch doesn’t fit any standard US electrical fixture. The screw neck should be flat to increase the holding power with the thin cover. The cone shaped neck could easily be torqued right through the thin flexible covers. They might work on a plastic receptacle box but a standard US octagon box takes an 8-32 screw for a cover. So the M4’s are too small to work for a round plastic light box. The price point was good, but it could be even better if they skipped the screws.

Easy to use blanking plates. Can be screwed in place, or glued along the narrow edge if that's what you need. I've had these outdoors covering up some old holes in the fascia where lights used to be, and after 2 years they still look as good as new. No yellowing, and they aren't brittle or damaged despite being in the sun.

These things can’t be legal. As another reviewer stated, thin as a milk jug. Can be folded to a taco shape (but thinner than a taco). Excess plastic on outer edges very unsightly. As for how bad can they be? I asked myself that question before purchase. I was willing to accept a mediocre product for the price but this is beyond unacceptable.

Good