Contractor's warehouse.
They used to have a store in brea but i heard it's just a warehouse now so you might have to drive up the 5 fwy to slauson. roof is striped like a pumpkin. I know, I hate driving into LA county too.
A quick search might help. Bought lots O'stuff there, always got good quality at great prices.
nuff said.
EDIT looks like they changed their name to HD supply:
http://www.showroom411.com/SiteBrowser.aspx?url=http%3a%2f%2fwww.contractorsw arehouse.com