Below is from a post on another thread that answers your question. They had said this 1 would be smaller than the AT-9, but according to this that's not the case.tkrandall said:
Measurements
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The LNB also draws less current than the old AT-9 dish as well. 180ma vs. 250-300 ma of the AT-9 LNB. This is good news because you can have longer cable runs with less voltage drop between the receiver and LNB when you have an LNB that needs 30-40% less amperage.
32.25 X 22.50= 725.625 sq. inch surface area vs 29.50 X 25.50 = 752.25
sq. in surface area for the AT-9. Curiously, the Slimline seems to have greater
gain than the AT-9(measurements taken using identical equip. but two
dish types, AT-9 & Slimline) transponder strengths obtained via HR-20-700.
You can now order it from a on-line dealer..... http://www.solidsignal.com/prod_display.asp?PROD=AU9-S
LNB arm with LNBS attached extends 23.5" from the dish surface area
• Weight: 25 lbs (including J-mount mast, dish surface, LNBs, arm and pole attachment)