5.0 UVB Fluorescent Tube Terrarium Lamp for Tropical Reptiles - T8,15 Watts,18 Inches (2-Pack)

I can’t really say weather it works good or not, this product is advertised as 18 inches when in reality it’s around 18.25 inches, thus won’t fit my fixtures, don’t buy this, it’s a waste of money unless you can custom build your own fixtures to fit them. Should be called Unlucky Herp

I needed to replace a half dozen UVB bulbs in our 18” Slimline fixtures (15 watt T8’s) and these fit perfectly. Normally, I would have gone with Zoo Med’s Reptisun bulbs, but they are currently twice as expensive as these. Although these bulbs have only been installed for 3 months, all of them are still functioning fine. I’ll update if they don’t last for a full year. Otherwise, for the price, I am really happy with my purchase.

Bought this 2 pack so that I wouldn’t have to purchase another bulb for awhile however the first bulb blew after about a week an half and now the second bulb is flickering as soon as I put it in. In the past I’ve bought other brands and had no issues. I won’t be purchasing this brand again.

Not sure if there have been receiving problems in the warehouse with shipping the incorrect product instead of this, but I received mine today and unlike most of the other reviews mine were 18 inches and could fit my lamp just fine. Will buy again

Only 1 of the two bulbs actually works. The bulbs are also slightly longer than the usual 18" bulbs so it's a tight fit in the housing.

Bulbs are too large for housing, thought I was doing something wrong when it broke the plastic of the housing. After a measurement my fears were confirmed, the bulbs are larger than a standard 18” bulb. The manufacturer needs to start making them with the appropriate size or not sell these at all. Avoid and buy from a reputable brand.

Purchased this brand to save some money, but found neither bulb in the 2 pack would fit in my lamp housing. I placed the bulbs next to my Repti-glo bulb I was replacing, and although both brands said the width was 15, the Lucky bulbs were slightly bigger. So I was unable to even test them to see if they work.

Bulb turned on for one day and burned out after box had been tossed out. Bought three bulbs total and only one has worked past the first day. Very upset.