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FIGURE 7.9: DURAVENT POLYPRO, SELKIRK POLYFLUE OR CENTROTHERM INNOFLUE HORIZONTAL
VENTING, (VENT OPTIONS #3 - 8, TERMINAL OPTION A)
FIGURE 7.10: DURAVENT POLYPRO HORIZONTAL VENTING WITH CONCENTRIC TERMINAL,
(VENT OPTIONS #3 & 4, TERMINAL OPTION F)
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