It is not 48 x 18; it is 46.5 x 16. Not satisfied at all.

I bought this on 02-25-25, and it doesn't fit a 48" x 18" tank. The glass is decently thick, and the folding hinge looks to be good quality (it would most likely last a while), but this doesn't fit a 48" x 18" tank. I have a 90-gallon Marineland tank that was made in 2017. the glass barely touches the sides ( 1/16" on either side). The glass needs to be about 6/8" longer so you can have 3/8" on both sides resting on the plastic lip. If I planned never to open the glass lid, I might be able to make it work, but most people will need to open the lid. If you have the glass pushed up to the front of the tank, the plastic extender (that you can cut) needs to be about 3/8" longer so it can reach the back lip. The actual dimensions of the glass (with the plastic backing on it) is 22 1/8" long and 16 3/8" wide.

The measurement are off for the 75 gallon tank Waste of time and money

Shipping was great, item in perfect shape, but these lids aren't inexpensive, however, they are highly irregular in fit. This particular one is a good 1/4 inch shy of filling the opening. Next time I order, it'll be too big to fit, or maybe even perfect. Its a complete crapshoot which I find inexcusable, since its straight cuts to a known size/template.

These glass tops are extremely heavy and well made. The glass is thick, and the components are nice.

I saw a review that was dead on. This 2-piece canopy set fits specifically an Aqueon 75 Gallon tank. I forget what brand mine is but is has a center brace on top so I hoped this would fit. It was just barely too short I mean less than an inch and it would have worked, What I did was took a piece of plastic filler strip from the lid I was replacing and put that on the side frame where the lid is supposed to rest. It works. The only reason I am giving 4 stars instead of 5 is I would have liked the lid to be maybe 1/4 inch longer or provide a plastic piece for the side like for the back. Overall I still recommend this lid is actually a bit thicker than my old one just make sure you know what brand of aquarium you have, or you might have to get creative to make it work.

bought this for my 75 gal tank and it wont even fit my 55 gal.(too small to fit even the 55) tank glass is 2 inch short length wise each piece and 2 inch short with wise i have bought many of these tops and all have been close to perfect this one not so much.

The plastic piece that you need to slide onto the glass is horrific. There are NO instructions as to how to get this piece to slide on. As you physically try to slide it on, you will have visions of the glass top breaking and cutting off your arm. It takes major FORCE to get this on the glass edge. I struggled and was literally laying on thing and managed to get it about half way on when I finally went to YouTube and saw a video of another distressed lady stating the same thing. In the comment section, someone suggested putting a small amount of olive oil on your fingers and running it along the glass edge before trying to apply the plastic piece. I was seriously going to return this, but decided to try this suggestion. It did work, and even though it still required some muscle, it was much easier and I was able to get the plastic piece onto the glass edge. This could be extremely DANGEROUS without that tidbit of information. This suggestion should be included with the purchase. There were several comments about this on YouTube, and fears of the glass breaking in half and losing an arm. Once you are able to get that plastic piece onto the glass edge, it is a very nice top, fits the tank perfectly and will help to keep the water in your tank from evaporating. But seriously, let people know how to put this piece on. It has to be lubed or you are risking a possible disaster!