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Closeup of vacuum tubes from solar water heating system.

Stock Photo:
Image ID: 74676100
Release Information: N/A
Small
500x335 6.9"x4.7" (72dpi) 133 KB
Med
1000x669 3.3"x2.2" (300dpi) 430 KB
Large
3872x2592 12.9"x8.6" (300dpi) 5.5 MB
Super
7744x5184 25.8"x17.3" (300dpi) approx.18.1 MB
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