Since you like to get into technical detail, the 48" is front to back dimension, and the 26" is top to bottom dimension. That's typically a 480-gal tank - 8'x4'x2'. Still a good pricecrawdaddy905;4354973; said:where are you getting your calculations from "STUD"
(Length x Width x Height) divide by 231
But if you want the actual volume, inside measurements will have to do
Quote from Graigslist
""1 INCH PLEXIGLAS 550 GALLON AQUARIUM. 96 BY 48 BY 26 INCHES""
96" minus 2" (1" for both ends) 94"
48" minus 1" for bottom 47"
26" minus 2" (1"for front and back) 24"
94 x 47 x 24 =106032 divide by 231= 459