Basic RIMS Tube Assembly - 13-Piece Set. 2" Tri Clover connections top & bottom, 1.5" Tri Clover connections side. Add a 2" Tri Clover cap or other 2" Tri Clover fitting to the top, and add from several 1.5" Tri Clover connections for the side in and out. Heating element adapter included. Add your own heating element (can be purchased from Lowe's or Home Depot). Measures 20" from end to end when assembled, including heating element adapter.