4" Tri-Clamp Dewaxer Columns4" Tri Clamp Tri Clover Dewaxing Columns This is a 4" Tri Clamp BVV Tri Clamp Dewaxing Spool. It is intended to have dry ice put into the sleeve to chill the material inside the column. **Note: When selecting a Pipe Hanger choose the size that correlates to the Sleeve OD NOT Spool OD Sizes Available: 4" x 8" Tri clamp Dewaxer Column 4" x 24" Tri clamp Dewaxer Column 4" x 36" Tri clamp Dewaxer Column Specifications: Tri Clamp Size 4" Material 304