Coldblocker Model Cost / Unit   Supply Pressure Minimum Maximum CB20 Call   120 Volts / 2.6 Amps 5" W.C. 14" W.C. CB30 Call   CB40 Call   CB50 Call   #43515000 Call >>> Lower mounting height kit for installations less than 8ft. #4348500 Call >>> Decorative grille & side panels Natural gas pricing / propane avaialble.
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