Specifications

Model SM-408 SM-410 SM-412
Nominal Size (feet) 4×8 4×10 4×12
Width (header length in inches) 47.8 47.8 47.8
Width Installed (includes space between headers in array) 48 48 48
Space between absorbers when installed (inches) 2.9 2.9 2.9
Length (inches) 95.5 119.5 143.5
Header Inside Diameter (inches) 2 2 2
Net Collector Area (square feet) 30.25 37.85 45.45
Net Weight Empty (pounds) 15.30 18.61 21.10
Water Capacity (gallons) 2.72 3.14 3.68
Recommended Water Flow Rate (gallons per minute) 3.2 3.14 3.68
Pressure Loss @ 6 GPM (psi) <0.5 <0.5 <0.5
Maximum Operating Pressure (psi) 35 35 35
Absorptivity 0.97 0.97 0.97
Emissivity 0.90 0.90 0.90
Heating Capacity, Certified by FSEC (Btu/sq.foot/day) 1000 1000 1000
Heating Capacity, Certified by FSEC (Btu/collector/day) 30,400 38,000 45,600

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