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123/8" (315mm) 55/16" (135mm) 45o3415/16" (887mm) 401/4" (1022mm) Figure 17. Dimensions for Framing the Firebox. Table 3. Inlet Placement Dimensions, refer to Figure 1. Side Inlet: Gas Electrical Distance back 63/16” 15.8 cm 81.2 21.5 cm Distance up 15.8” 4.1 cm 111/16” 4.3 cm Bottom Inlet: Gas Electrical Distance back 59/16” 14.1 cm 811/16” 22.0 cm Distance from side 37.8” 9.8 cm 43.4” 12.1 cm Figure 18. Dimensions for Top Framing the Firebox. 1 The gas line, 3.8 inch NPT, can be brought to eit