Accessories & Plenums
Plenum box, HVAC dampers, and installation accessories — supply and return air plenums, neck adaptors, collars, boots, duct connectors, and mounting hardware.
- Supply & return plenums
- Neck adaptors
- Dampers & boots
- Mounting hardware
Available models
31 products
Butterfly Damper for Model 16 Diffuser
Butterfly Damper for Model 16 Diffuser
- Type
- Damper
- Damper Type
- Butterfly
Steel OBD Duct Mount Damper for Model 20 Ceiling Di...
Steel OBD Duct Mount Damper for Model 20 Ceiling Di...
- Material
- Steel
- Type
- Damper
- Damper Type
- Opposed Blade
Installation Frame for Model 24 Diffuser
Installation Frame for Model 24 Diffuser
- Type
- Mounting Frame
Steel Butterfly Damper for Model 24 Diffuser
Steel Butterfly Damper for Model 24 Diffuser
- Material
- Steel
- Type
- Damper
- Damper Type
- Butterfly
Steel Opposed Blade Damper for Model 24 Diffuser
Steel Opposed Blade Damper for Model 24 Diffuser
- Material
- Steel
- Type
- Damper
- Damper Type
- Opposed Blade
Round Butterfly Damper for T-bar Diffusers
Round Butterfly Damper for T-bar Diffusers
- Type
- Damper
- Damper Type
- Butterfly
- Compatible
- T-Bar Diffusers
Galvanized Steel Ring Collar (6in.-18in.)
Galvanized Steel Ring Collar (6in.-18in.)
- Material
- Steel
- Type
- Collar / Connector
- Size Range
- 6–18 in.
Push Pins for 5400 Series Ring Collar
Push Pins for 5400 Series Ring Collar
- Type
- Collar / Connector
Galvanized Steel Tab Collar (6in.-14in.)
Galvanized Steel Tab Collar (6in.-14in.)
- Material
- Steel
- Type
- Collar / Connector
- Size Range
- 6–14 in.
Steel OBD damper
Steel OBD damper
- Material
- Steel
- Type
- Damper
- Damper Type
- Opposed Blade
Aluminum Opposed Blade Damper
Aluminum Opposed Blade Damper
- Material
- Aluminum
- Type
- Damper
- Damper Type
- Opposed Blade
Aluminum Plaster Frame
Aluminum Plaster Frame
- Material
- Aluminum
- Type
- Mounting Frame
Aluminum OBD damper for ARE/ARS Ceiling Diffuser
Aluminum OBD damper for ARE/ARS Ceiling Diffuser
- Material
- Aluminum
- Type
- Damper
- Damper Type
- Opposed Blade
Primex Terminator Diffuser Collar
Primex Terminator Diffuser Collar
- Type
- Collar / Connector
Distribution Plenum for Linear or Slot Diffusers
Distribution Plenum for Linear or Slot Diffusers
- Type
- Plenum / Air Box
Primex 90° Squeeze Elbow
Primex 90° Squeeze Elbow
- Type
- Elbow Fitting
Light Commercial Access Door
Light Commercial Access Door
- Type
- Access Door
- Grade
- Light Commercial
- Material
- Steel
Filler Panel to Convert Sheetrock GRD for T-bar App...
Filler Panel to Convert Sheetrock GRD for T-bar App...
- Type
- Panel
- Compatible
- T-Bar Diffusers
Steel Perforated Panel
Steel Perforated Panel
- Material
- Steel
- Type
- Panel / Filler
Radial Damper
Radial Damper
- Type
- Damper
- Damper Type
- Radial
Square to Round Back Panel for RZ Modular Core Diff...
Square to Round Back Panel for RZ Modular Core Diff...
- Type
- Panel
- Brand
- Rezzin
Square to Round Back Panel for RZ 4-Way T-bar Diffuser
Square to Round Back Panel for RZ 4-Way T-bar Diffuser
- Type
- Panel
- Compatible
- T-Bar Diffusers
- Brand
- Rezzin
Rezzin Rough-In Plate 16in. OC
Rezzin Rough-In Plate 16in. OC
- Type
- Rough-In Plate
- Brand
- Rezzin
Rezzin Rough-In Plate 24in. OC
Rezzin Rough-In Plate 24in. OC
- Type
- Rough-In Plate
- Brand
- Rezzin
Rezzin Rough-In Plate 16in. OC
Rezzin Rough-In Plate 16in. OC
- Type
- Rough-In Plate
- Brand
- Rezzin
Rezzin Rough-In Plate 24in. OC
Rezzin Rough-In Plate 24in. OC
- Type
- Rough-In Plate
- Brand
- Rezzin
Rezzin Rough-In Plate T-Bar
Rezzin Rough-In Plate T-Bar
- Type
- Rough-In Plate
- Compatible
- T-Bar Diffusers
- Brand
- Rezzin
Rezzin Rough-In Plate T-Bar
Rezzin Rough-In Plate T-Bar
- Type
- Rough-In Plate
- Compatible
- T-Bar Diffusers
- Brand
- Rezzin
Surface Mount Frame for T-bar Diffusers
Surface Mount Frame for T-bar Diffusers
- Type
- Mounting Frame
- Compatible
- T-Bar Diffusers
Steel OBD damper for SRE/SRS Ceiling Diffuser
Steel OBD damper for SRE/SRS Ceiling Diffuser
- Material
- Steel
- Type
- Damper
- Damper Type
- Opposed Blade
Round Multi-Blade Damper for T-bar Diffusers
Round Multi-Blade Damper for T-bar Diffusers
- Type
- Damper
- Damper Type
- Multi-Blade
- Compatible
- T-Bar Diffusers
Factory-direct pricing on accessories & plenums.
Share size, quantity and destination — we reply within 24 hours with pricing, lead time and packing details.
- In stock — ships in 1–15 days
- UL 181 Class 1 standard
- 30 years in HVAC duct
- Houston, TX — 5,000 m²
- FTL / LTL freight available
Request a quote for your project
Tell us your requirements. We respond within 24 hours on business days.