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BLOCK HOLE
VENTS
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IMPORTANT AIRFLOW NOTES:
Flame & Ember
resistant vents naturally provide less airflow than regular, unprotected
vents and Vulcan Vent airflow ratings (NFVA)
are approximately 91% that of the same size standard 1/4" screened vent
and are listed within each products description. In retrofit
application you may need to increase the number of vents currently in use
to maintain proper ventilation.
Please consult your
local building codes and/or engineer to determine proper airflow/venting
requirements and the number of vents required for your project.
Standard sizes show below. Custom vents in other shapes & sizes also available, please call for pricing.
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