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Tony J

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  1. Hi All We manage a block that has two stairwells with one AOV in each stairwell. The maintenance company have since told me the openings do not conform (this is some 5 years after installation, it has passed every service) as they do not open to 140 degrees; and they want to replace the whole system at a cost of ~3k per vent Having spoken to some other companies there does seem to be disagreement about whether this sort of opening is required (they open to about 60 degrees, 1m x 1m vent) Does anyone have any input please? Thanks in advance
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