The completed lid arrived for my MarineX 90.3 a day early last week. The fit and finish are amazing. I had previously used a "kit" to build a lid for the aquarium, and while that was functional, it was nowhere near as clean and tight as this lid. Their attention to detail was superb, the lid fit tightly and perfectly without any necessary adjustment to my equipment. I particularly like the opening for feeding, no longer do I have to lift the entire lid to do my feedings. The Toplids staff were excellent to work with, guiding me along the way for taking measurements and keeping me informed of my progress, and the lid arrived much quicker than their original estimates.