SF747 Multi-Fuel – Quantity of 2 is required. 16O2M Cl? Yton – Quantity of 2 is Required. 16O2R/18O2G Ashley /Cl? Yton – Quantity of 2 is Required. USSC Pellet Stove Model Note. 85OO Multi-Fuel – Quantity of 2 is required. VG71OO – Quantity of 2 is Required.