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The IO HVAC CONTROLS VD-RK-14 is a variable air volume diffuser retrofit kit sized for 14-inch neck diffusers. It provides the hardware and mounting screws needed to convert or upgrade an existing ceiling diffuser into a VAV-compatible assembly without replacing the entire diffuser body. HVAC technicians working on light commercial or commercial VAV systems install this kit during zone control retrofits or system balancing projects. The included mounting screws support a complete, self-contained installation, reducing trips to the supply house and keeping the retrofit straightforward.
This kit is suited for VAV system retrofits in commercial and light commercial applications where existing diffusers are being upgraded to support variable air volume zone control. It is designed for 14-inch neck diffusers and is typically installed by licensed HVAC technicians as part of a broader VAV controls upgrade. The kit reduces the need to replace full diffuser assemblies, making it a practical choice for occupied-building retrofits where minimizing ceiling work is a priority.
Designed as an OEM-style retrofit solution for VAV diffuser assemblies with a 14-inch neck diameter in commercial HVAC zone control systems.
Installation is performed by a licensed HVAC technician. Power down all associated VAV controllers and air handling equipment before beginning work. Follow local mechanical codes and the system manufacturer's documentation for diffuser mounting and actuator wiring requirements. Verify neck diameter and diffuser mounting configuration before installation to confirm fitment.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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