These are really nice. They are much heavier plastic than the Jiffy covers you get in the Box stores. Most of the damage you get to these devices is what is called "Hanger Damage"; when you have to store the covers for the 50 weeks they are not in use.
STURDIER THAN EXPECTED AND SUPER FAST SHIPPING. ARRIVED IN DAYS OF ORDERING!! THANK YOU! WOULD DEFINITELY RECOMMEND!!
The dome fit well on the 1020 tray, with substantial condensate forming in a couple hours (tray was on a heat mat). Be ready for a significant water dump if you're not careful when removing the dome from the tray!
I have purchased these twice and have been satisfied with their quality. While the temps are still quote cold here in North Dakota, covering my seedlings at night with a heat mat underneath helps me keep my greenhouse heater at a lower temp. All around good quality product.
These seem a bit heavier than the ones you get as part of a seed starting kit, which was what I was looking for. They arrived quickly and undamaged.
Good product heavy duty
The covers are lightweight plastic. One cover had a hole that was too large and the vent insert would fall out. I didn't receive one package of vents with the order.
I like to use a product until it will no longer work right. This dome seems to be well made and substantial enough to last several seasons.
Fit trays. Straighter sides than most giving more space. Thicker than most. Should last longer than me.
These are heavier than the ones included in most kits, but not indestructible. They seem to fit ok on over heavy duty trays. You only use them for a few days til seeds pop. Would not leave in sun as that usually makes them all brittle. Happy enough.