8" x 8" x 6" Ceiling Diffuser Box, Side Outlet

Lukjan Ceiling Diffuser Box, Side Outlet — Series 100, 6″ Collar, 8″ L × 8″ W

Side-outlet ceiling diffuser box designed for HVAC supply air installations. This Series 100 model features a 6″ circular collar inlet, square box body (8″ × 8″), and a side outlet for duct connection. Intended to provide a clean, structured transition from ductwork to ceiling grille registers.

• Series / model: Series 100 (Lukjan) — part of Lukjan’s diffuser / register box line :contentReference[oaicite:2]{index=2}
• Part / MPN: RB61080806 (for 8″ × 8″ × 6″ variant) — same family line as your target spec :contentReference[oaicite:3]{index=3}
• Collar inlet size: 6 inches diameter (round duct inlet) :contentReference[oaicite:4]{index=4}
• Box body dimensions:
  • Length (front to back, or depth): 8 inches :contentReference[oaicite:5]{index=5}
  • Width: 8 inches :contentReference[oaicite:6]{index=6}
• Material: Galvanized steel (standard HVAC sheet metal) :contentReference[oaicite:7]{index=7}
• Finish: Galvanized coating / zinc finish for corrosion resistance :contentReference[oaicite:8]{index=8}
• Weight: ~0.20 lb (as listed for RB61080807 variant) :contentReference[oaicite:9]{index=9}
• Shape & design: Square box body with round collar input, side outlet orientation for duct connection
• Connection type: Slip or crimped into side outlet duct (rounded duct connection) — side outlet fits standard round duct to register path
• Mounting / installation:
  • Mount flush with ceiling plenum / cavity, secured to structure or framing as required
  • Attach side outlet duct into the side of the box, ensuring proper alignment with grille / register opening
  • Seal all joints and seams with foil HVAC tape or duct mastic to ensure airtightness and minimize leakage
  • Ensure the collar is properly aligned with supply duct to avoid undue stress or offset flow
• Applications:
  • Used in ceiling register installations where supply air is delivered from a side duct into a ceiling-mounted diffuser / grille
  • Residential or light commercial HVAC systems
• Performance & design considerations:
  • Because air enters via a round 6″ collar into a square 8″ × 8″ box, ensure minimal abrupt transitions and maintain smooth airflow to avoid turbulence and noise.
  • The side outlet orientation requires care in duct routing to avoid sharp bends or restrictions immediately downstream of outlet.
  • The galvanized steel and consistent internal surfaces support durable installation with minimal maintenance.