285MBH TFTN Firetube Boiler 10:1 Turndown, Nat Gas, 95% AFUE, WiFi Monitoring, EZ Setup Wizard , Remote Diagnostics Full-Color Display, Top/Bottom Plumbing, Low Water Cutoff, 120V Outlet , 3+DHW Zones (Expandable), 180 lbs, 4.9 Gal Water, 1-1/4" NPT Water, 3/4" Gas, 3" Vent, 18-3/8"D x 21-3/8"W x 34-1/8"H (LIMITED LIFETIME WARRANTY) | WH2O