Needed quickly - 20 Long 3 side measurments

I am not home right now, am at work. I am planning on going to the Petpartners immediatly after work to get Serena's feeder rat, and wanted to get the aquarium background to do this treatment http://www.ball-pythons.net/forums/s...ium+background to her enclosure. Hubby isn't home right now, so I was wondering, can someone who is on here measure their 20 long length of both short sides and the back together?

Thank you
Nixie

30 1/4" x 12 1/2" x 12 3/4"

You are great...thank you so much!!!!!!!:D

Nixie