u mean dimensions width and height? I never measured mine,that paticularly never mattered much to me! An educated guess would be 24'' across. it's wide and tall. The Gf 575 is a super bbx btw,it's in my top 5,every aspect,tuner,cass function,looks it just has it all. i have the 575z (rec from pabaker here on s2go) i think that model is the nicest,the other i believe the 575 b has purple sliders,i just don't fancy the look as much.
Anyhoo,hope someone else anwsers your question directly,did not mean to hijack your thread glad to see a thread re: the 575 it's a very very underated and top notch bbx!

Well if you know how Long your GF-9000 is then
this might help
100_2939 GF-575 SHARP GF-9000Z Comparison top to bottem fullsize
10 Feb 08 SHARP GF-9000Z Canada Boombox 120218371125