What would be stopping it? I have one on a 20 vert, it is a tank not set up yet and I just have some plants and java moss in cups there for now. Keep in mind that you can subtract a few inches from the height due to the drainage and substrate layers. If something is in the way of this light, wouldn't it be in the way of another light? These lights are pretty strong.
The brand is Commercial Electric. It is in blue packaging with "Daylight" written on the front left. There are other color packages, you want blue. The SKU# is 772-429. Model EDX)-18/19. 6500k, 120V, 60Hz, 203A and 19 Watts. It says on the package that 19Watts equals 75 watts. The 75 is bigger and more noticeable, which is why I pointed this out. It says it lasts 7 years. The bulb itself is white in color and is in spiral form.