So their site says, "Northwest Pale Ale Malt (2.6-3.0°L)
A slightly darker base malt than our Premium 2-Row, our Northwest Pale Ale Malt is produced from well-modified, Western-grown 2-Row barley, with a kilning regimen based closely on traditional British Pale Ale malting practices. Contributes a malty complexity to beer flavor and aroma. Excellent in American Pale Ales and American versions of British beer styles. "
Sounds to me like domestic malt kilned in a British style. I use Williams Brewing malt extract and love it. I would suggest either the Amber or Pale Ale malt.
Amber, uses two row and some crystal - http://www.williamsbrewing.com/AMERI...-P1302C99.aspx
Pale Ale, more bready than the Amber and probably what I would choose - http://www.williamsbrewing.com/PALE-...-P2488C99.aspx