Picked up a Purolator Boss PBL24011 today, and cut it open to take a look. The equivalent filter would be an ACDelco PF52 or a Fram XX3980. Bought it at Advance Auto Parts online for $9.59 before tax with a 20% code. Retail or shelf price was $11.99. Filter weighed in at a whopping 14.3 oz.. I weighed the equivalent Fram Ultra XG3980 earlier this past year, and it weighed in at 12.8 oz. Pleat count total was 61, and it does have a metal crimped seam. Most of the glue I have seen used on oil filters is a brown color. The Purolator Boss is using a different kind of glue, and it is a light cream color. Purolator used extra glue at the seam area, and you can see that in the pictures. I know a lot has been said about what is the micron rating and all that mess, but I don't really care because this filter is the Boss. The quality is top notch.