The Model 8000 Commercial RiserPACK™ is a prepackaged economical riser assembly designed for NFPA 13 wet fire sprinkler systems. The Commercial Model 8000 is available in two different riser styles and seven different size/connection combinations: Bronze Riser: · 1-1/4", 1-1/2", 2" NPT · 1-1/2", 2" Groove · 1-1/2", 2" NPT x Groove Schedule 40 Fabricated Steel Riser with Red Powder Coated Finish: · 2-1/2", 3", 4", 6" Groove