- Round duct and fittings shown
or specified as "lined" to be constructed of outer pressure shell
fabricated from new, prime galvanized steel in accordance with the latest
- Ductwork to be gauged per the
latest edition of SMACNA's HVAC DUCT CONSTRUCTION STANDARDS for the
specified pressure class.
- Duct and fittings to be
internally lined with 1-inch "Spiracoustic" rigid duct liner,
per manufacturers instructions.
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