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Air-Tight Damper
On canopy-exhausted Type A2 and C1 (operating in B-mode) models, Labconco highly
recommends installing an air-tight damper above each biosafety cabinet when
connected to a building exhaust system. The air-tight damper allows for fine adjustment
of the exhaust air volume provided, in order to correctly set the necessary exhaust
airflow for each biosafety cabinet. It also allows the biosafety cabinet to be sealed off
from the building exhaust system, should it become necessary to do so.
Note: Type B2 models must always be connected to a remote exhaust system. Type B2
models have an air-tight damper built into the biosafety cabinet’s exhaust housing.
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