One must know what negative format and lens focal length to figure out enlarger height for an 8x10 print. I have a 23CIII XL, but long ago replaced its light source with a custom Heiland LED head, which is substantitally less tall than the standard Beseler cylinder. In my case. when making an 8x10 from a 35mm negative and 50mm lens, or from a 6x8 negative and 105mm lens, the top of the head doesn't go above (actually it's somewhat below) the top of the roughly 45-inch high column. Someone who has the same enlarger and still uses Beseler's light source would need to verify measurements in that configuration.