The RectorSeal 81964 Airtec Ceiling Support Flange provides strong, stable support for ceiling diffuser and grille installations in HVAC systems.
Designed for use during the rough-in phase, this Airtec ceiling support flange ensures proper alignment and secure mounting of ceiling registers and diffusers. Its durable construction and precision-molded dimensions make it ideal for residential, commercial, and light industrial applications.
Model number 81964 designates this RectorSeal Airtec Ceiling Support Flange designed for rough-in installation in HVAC ceiling systems.
Provides a stable platform for securing diffusers, ensuring a professional fit and finish after ceiling installation.
Constructed from durable, heat-resistant materials that resist warping and deformation during installation.
Compatible with standard Airtec ceiling diffusers and grille assemblies for easy integration into duct systems.
Technical Data & Specifications
Manufacturer: RectorSeal
Brand: Airtec
Model Number: 81964
Product Type: Ceiling Support Flange, Rough-In
Length: 25-5/8 inches (651 mm)
Width: 12 inches (305 mm)
Height: 3/8 inch (9.5 mm)
Material: Rigid polymer composite or thermoplastic (high strength)
Application: Provides rough-in support for ceiling diffusers, registers, and grilles
Mounting Type: Ceiling framing or joist attachment for HVAC duct connections
Installation: Designed for easy positioning during drywall or ceiling installation
Compatibility: Standard Airtec diffuser models and other common HVAC ceiling components
Temperature Range: Suitable for standard HVAC system operating temperatures
Color: Neutral or white (may vary by production batch)
Compliance: Meets applicable building, mechanical, and HVAC code standards
Manufacturer Warranty: Limited warranty against material or manufacturing defects
Features & Benefits
Provides a secure and level mounting surface for ceiling diffusers and registers.
Ensures accurate alignment and professional finish during HVAC system installation.
Durable, warp-resistant material maintains dimensional stability during rough-in and finishing stages.
Lightweight and easy to handle, reducing installation time and labor cost.
Compatible with a wide range of Airtec diffusers and other ceiling ventilation accessories.
Has a 3/8" lip that drops below ceiling, requiring dry wall installers to cut a hole for you. RCF flanges are available for both 16" and 24" on center framing. Can be used with any Airtec grilles, dampers or Tuffbox diffuser boxes.