iO HVAC Controls HD-NA Series Rectangular Non-Standard Zone Damper

iO HVAC Controls HD-NA Series Rectangular Zone Dampers cover non-standard duct sizes that fall outside the common HD rectangular line. The NA series uses the same heavy-duty single-blade construction, galvanized steel housing, and 24V spring-return actuator — just sized to fit odd duct dimensions found in retrofit and custom-sheet-metal installations.

• Non-standard width × height combinations
• Rated for duct systems up to 2.0" WC
• 24V spring-return actuator (power-open / spring-close)
• Galvanized steel housing
• Standard two-wire control
• 97 size combinations from 6x6 up to 38x22

Pair with any iO HVAC Controls ESP, ZP, or Saturn series zone panel for a complete multi-zone comfort system.