Fireplace Xtrordinair ProBuilder 42 MV Linear Series Gas Fireplace

The ProBuilder 42 Linear is the smallest model in our lineup, featuring 42” wide by 15” tall glass. This value-priced fireplace is ideal for providing zonal heat to cozy living spaces in the home up to 1,250 square feet. This Millivolt (MV) model is a great choice for anyone who desired a simple heat source that does not require power for installation and operation, as it features a Continuous Pilot system where the pilot flame stays lit at all times.


  • Heating Capacity*: Up to 1,250 Sq. Ft.
  • BTU/Hr. Input (NG/LP): 13,000 to 25,000 (50% turndown)
  • P4 Efficiency: 64.80% (NG) 65.89% (LP)
  • Steady State Efficiency Up to 76.11% (NG) Up to 77.31% (LP)
  • Weight: 165 lbs. (75 kg).
  • Viewing Area: Tempered Glass – 40-3/4” W x 13-3/4” T

ProBuilder™ Linear Gas Fireplace Brochure

ProBuilder 42, 54, 72 MV Operation Manual
ProBuilder 42, 54 Linear Fireplace Installation Manual
ProBuilder 42 Linear Fireplace Cheat Sheet
PB 42 Linear Framing Worksheet
Gas Fireplace Framing Guide