These fit my patio heaters well; all I added was a couple bungie cords for each - one in the middle and one to cinch at the bottom to keep spiders out - they're everywhere here on the California central coast and they're might productive with their freakin' webs. I noticed one had spun one on the side of the one of the covers, but I just wiped it off. Good purchase, because without them, those spiders would be attacking my patio heaters!