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Handy man book plumbing and heating encyclopedia (1922)
Hardin-Lavin Co. · Hardin-Lavin Co. · leaf 184
rt. ft. per Sea 22-in.Height 4 sq. ft.per Sec. 18-in. Height 3 sq. ftper Sec. 2 6 20 16 13 8 6 3 9 30 24 19 y2 12 9 4 12 40 32 26 16 12 5 15 50 40 32 y2 20 15 6 18 60 48 39 24 18 7 21 70 56 45 y2 28 21 8 24 80 64 52 32 24 9 27 90 72 58% 36 27 10 30 100 80 65 40 30 11 33 110 88 71 y2 44 33 12 36 120… … HEATING SURFACK- -SQUARE FEET >To. of fcfl -in. IT-in. Sections Length3-ln. Height6 Height5 per Sec. sq. ft. sq. ft per Sec. per Sec. 2 6 12 10 3 9 18 15 4 12 24 20 5 15 30 25 6 18 36 30 7 21 42 35 8 24 48 40 9 27 54 45 10 30 60 50 11 33 66 55 12 36 72 60Plumbing · Heating · Ventilation · And air-conditioning · Bathrooms -- trade · Lavatories and sinks · Bathtubs · Ceiling ventilators · Water heaters · Steam and condensate piping and pumps · HVAC ducts and casings · Air duct accessories
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