

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The RECTORSEAL 803-10 is a galvanized steel duct ring engineered to provide a secure transition connection between round ductwork and ceiling diffusers or grilles. The 10-inch nominal diameter fits standard round duct installations and suits ceiling supply air applications in residential and light commercial HVAC systems. Galvanized steel construction delivers corrosion resistance and structural rigidity suited to long-term duct installations. HVAC technicians and sheet metal installers use this component to ensure a stable, airtight seat for diffuser or grille mounting at the ceiling plane.
This duct ring is designed for ceiling supply applications where round ductwork terminates at a diffuser or grille. It provides the mechanical interface needed for proper diffuser seating and dependable airflow transition from the duct into the conditioned space. Typical installations include residential forced-air systems and light commercial supply air layouts where a clean, secure duct-to-diffuser connection is required at the ceiling.
Designed as an OEM-style replacement and standard-fit component for ceiling diffusers and grilles used with 10-inch round ductwork in forced-air HVAC supply systems.
Installation is typically performed by licensed HVAC technicians or sheet metal contractors. Shut down the air handling system and confirm zero airflow before beginning duct termination work. Secure the duct ring to the ceiling opening and round duct per local mechanical code requirements, referencing SMACNA duct construction standards where applicable. Do not operate the system until all connections are sealed and the diffuser or grille is fully seated against the ring.
Thanks for subscribing!
This email has been registered!