Fire Protection › Fire Sprinkler Riser Manifolds Image 1 of 1 Fire Sprinkler Riser Manifolds $0.00 Application: Commercial, ResidentialSize: 1-1/4”, 1-1/2”, 2”, 2-1/2”, 3” 4” 6” 8” Add To Cart Added! Application: Commercial, ResidentialSize: 1-1/4”, 1-1/2”, 2”, 2-1/2”, 3” 4” 6” 8”