Got in a case of the brown PET bottles today and filled one. Overall diameter is UNDER the maximum allowed and is only 2.712 (must be under 2.750") and height is not as tall as some regular beer bottles I have... Well short of the maximum height. So, the brand new PET bottles will work. Light weight for shipping, and are easy to counter pressure fill. PLUS they are dark brown and contrary to the Pepsi small bottles I have, which are clear, won't cause issues of light struck... skunky beer.