Onforu 4 Pack 42W LED Black Lights, Blacklight Bars with Plug and Switch, Glow in The Dark Party Supplies for Halloween Decorations, Bedroom, Body Paint, Stage Lighting, Poster, Black

I bought these for my classroom glow party and they were very bright and effective. Yes, they will get a little bit hot, but that is to be expected. I kept mine on for hours and they ended up doing just fine. Just don’t leave them on unsupervised.

Only downside is they run hot. After 30 min the entire case is above 108 degrees F according to my thermal probe gun. Not a good idea for bedrooms or any medium size room unless you have vaulted ceilings. Plenty bright, they don't use an efficient bulb. LED doesn't put off anywhere near this much heat. You must use the mounts because they will leave a mark on whatever you place them on, they are too hot to hold after 2 hours. Great coverage, I'd say they'll work with a 18x25 room no prob. You can go larger of you don't need it to be too bright, like a skate rink or dance floor. They might be intended for commercial use so pardon my heat comments if that's the case.

The media could not be loaded. Lights were bright and worked perfectly for my glow party

I bought these for a glow day classroom transformation. Loved the price of these but it didn’t transform the room as well as I wanted it to. Good for a small room but not for a classroom.

First of all, these UV lights look AMAZING. Even one seems to cover a pretty solid surface area and gets pretty good glow from UV reactive surfaces.Construction seems pretty great, all metal housing and feet for install. Finned on the back to help dissipate heat.Mainly chimed in with a review as I was initially a bit concerned about the heat, as it definitely feels warm and borderline hot to the touch after running for more than 15 minutes. After doing some research, I did see that it was pretty common for LEDs to get ~50-60 degrees Fahrenheit hotter than room temperature. Took some surface temperature readings after running for a couple of hours in a 75 degrees Fahrenheit room, and seemed to read right within that range.That said with that in mind, I'd be diligent about where you mount or place these things.All in all, a great purchase for less than twenty bucks a light, can't wait to get the other ones up!

Great for theatre room and glow in the dark carpet!!

Great lights worked well for my setup

I’m glad these came several in a pack. We had a glow party in my garage and 4 were needed to get the brightness/ glow we were looking for. They are durable and the size is perfect!