Might as well give the others while I have the catalogue out, in case anyone else will find them helpful:
Mega Tower 3.0 (aka single wide black tower) - 26"x21"x73" Double Wide 3.0 - 35"x21"x73" Premium Tower (aka spine case) - 45.5"x21"x76" Square O Tower - 25"x20"x73" Cube 3.0 - 14.75"x14.75"x16 Double-Sided 32 Piece Slim Tower - 18.5"x24.8"x77.95" (yes, it actually says .95...) Pedestal 3.0 - 18"x18"x41.5"
Would have thought there was more than 9 inches between single and double wide, but that's what the catalogue says - anyone able to measure the width of a double wide black tower to corroborate?