See this link:
This panel has been re-designated as LC3040B. It is a 150 amp, 30 space , 40 circuit panel. That means that it has 20 slots that take full size breakers only and 10 slots that takes half size breakers.
http://www.munroelectric.com/silvereclipse/index.jsp?path=product∂=1774&ds=dept&process=search&ID=,Breakers..Panels...Gear,Loadcenters.,Murray...Siemens.Panels,Main.Breaker.Loadcenters
Normally the slots reserved for the twin breakers are at the bottom, as referenced from the main or entrance lugs. The bus in those positions will look different (slotted) from the rest of the panel.thanks! You wouldn't happen to know if there are slots that are dedicated for the splits would you? Can't find a spec sheet for this one...
AS HH said, they look different from the others as they have a raised tab in the center. I would expect they are the lower 5 slots on either side. There should be a label on the panel that identifies them.thanks! You wouldn't happen to know if there are slots that are dedicated for the splits would you? Can't find a spec sheet for this one...