Thread NPT: 1-1/2″. Diameter: 8.3″. Height: 11.4″. Mounting system allows removal without tools. Bonding connection both sides. O-ring seal all joining surfaces. #304 stainless steel basket. One-piece molded sight glass eliminates tie rods and gaskets. Improved drain plug. Non-metallic cap magnifies internal viewing. Improved basket design. C84400 bronze head casting. UL Listed 255-D.