Stacking Filter Plate Ring KIT This Stacking Filter Plate and Ring Kit allows the user to stack multiple levels of filtration while having the rigidity of a solid filter plate. These components are made out of 304 polished stainless steel and will fit inside of the corresponding Tri-Clamp/ Tri Clover parts. The stainless steel rings are solid and measure 8mm in thickness and the filter plates measure about 3mm in thickness with 6mm holes. This Kit Includes: 1x Filter Plate 2x Drop-in Retaining | BVV Stacking Filter Plate Ring KIT