Heater's patented vent free dual fuel system is composed of dual valves and dual oxygen depletion sensors and includes a manual selector switch to ensure correct installation. SKU: 43119837 MFG: MHVFDF30BFT Shop more products by Mr. Heater. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping charges calculated at checkout. Shipping not available to AK,AE,AA,AE,AE,AE,AP,GU,HI,PR,VI $250.70 Quantity In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Color: White Dual LP/NG low oxygen detection systems Thermostatic control for accurate temperature Battery operated electronic spark ignition Feet and mounting hardware included FEATURES MFR: MHVFDF30BFT SKU: 43119837 UPC: 089301004870 Brand: Mr. Heater