The Southwark Model 85 represents a premium solution for HVAC distribution in residential and light commercial applications. Engineered with a top-mounted circular outlet, this box allows for a direct, vertical connection to flexible or rigid branch ducting.
The standout feature is its integrated insulation, which is specifically designed to meet modern building codes regarding energy conservation. By wrapping the galvanized steel plenum in high-quality insulation, the Model 85 mitigates the risk of "sweating" (condensation) that occurs when cool air passes through a boot located in a warm attic. Its sturdy construction ensures a leak-resistant seal, while the flanged base provides a secure mounting surface against drywall or ceiling joists.
The Southwark Model 85 is the industry standard for contractors seeking a reliable, code-compliant ceiling plenum. It is primarily used to house the supply air register, acting as the final "staging area" for conditioned air before it enters a room.
Key Features & Specifications
- Configuration: Top-outlet (90-degree transition from the ceiling plane to the duct).
- Material: Heavy-gauge galvanized steel for superior durability and corrosion resistance.
- Insulation: Pre-installed R-value insulation (available in various thicknesses such as R-4.2, R-6, or R-8 depending on regional requirements) to enhance HVAC system SEER ratings.
- Vapor Barrier: Often includes a foil-faced or black-sleeve exterior to prevent moisture infiltration into the insulation.
- Compatibility: Designed for use with standard round flexible ducts and a wide variety of ceiling diffuser sizes.
Primary Benefits
- Energy Efficiency: Reduces thermal gain/loss in attic spaces.
- Noise Reduction: The interior insulation helps dampen the sound of rushing air for a quieter environment.
- Easy Installation: Built-in flanges allow for quick attachment to framing, saving time on the job site.
