The closest Bainbridge AlphaRag mat board to the Westmister Rag "Bright White" is AlphaRag "White". The Bainbridge Alpharag also offers better protection than the Westminster since it has the Zeolyte Artcare protection. Table below shows the Bainbridge part numbers.
Originally Posted by winger
8-Ply Alpharag White - 8660
4-Ply Alpharag White - 8634
2-Ply Alpharag White - 8632
We carry Alpharag White in 8,4 and 2 ply in window cut, blank, and full sheet. It is not on our website yet but hopefully will be soon.
If you would like a sample of this color and the Pure White which is a little brighter and the Pearl White which is less bright just provide me your address in a PM.