The PEG F Series offers a classic low profile design in seven sizes from 75 MBH to 299 MBH with up to 82.7% AFUE. The PEG F features a one-piece, easy-to-remove front panel that conceals the electronic ignition control. The unit features a dependable cast iron heat exchanger and cast iron push nipples for greater longevity. This atmospheric chimney vent boiler has a front-mounted integral draft hood and vent damper. 2 1/2 inch single and dual piping risers (depending on boiler size) simplify replacement piping. The PEG-F offers a 12-Year Non-Prorated warranty (Residential Applications).