2-1/4" x 12" x 6" Register Boot, Center End

Lukjan Center End Register Boot — Series P17C, 6″ Ø, 12″ Length, 2-1/4″ Width

Center-end style HVAC register boot that transitions airflow from a 6-inch round duct to a narrow rectangular throat. Ideal for installations where the duct terminates flush with a surface and the grille or register will mount directly to a narrow face opening.

• Series / model: P17C (Lukjan) :contentReference[oaicite:1]{index=1}
• Part number / MPN: RB102126 for the 2-1/4″ × 12″ × 6″ variant :contentReference[oaicite:2]{index=2}
• Nominal duct connection: 6 inch diameter (round duct) :contentReference[oaicite:3]{index=3}
• Boot length (depth): 12 inches :contentReference[oaicite:4]{index=4}
• Throat / face opening width: 2-1/4 inches (2.25″) :contentReference[oaicite:5]{index=5}
• Material: Galvanized steel, 30 gauge :contentReference[oaicite:6]{index=6}
• Finish: Hot-dip galvanized :contentReference[oaicite:7]{index=7}
• Weight (approx): 0.50 lb :contentReference[oaicite:8]{index=8}
• Mounting orientation: Center end — air flows into the round duct end, and discharges through a rectangular face (narrow side) :contentReference[oaicite:9]{index=9}
• Seam / connection method: Screwed or riveted, sealed with foil tape or duct mastic at joints for air-tightness (standard practice for HVAC register boots)
• Compatibility considerations:
  • Ensure the grille / register faceplate opening is long enough to cover throat length and at least as wide as 2.25″.
  • Check that airflow velocity and pressure drop through the narrow throat are acceptable for your system design.
  • Seal all seams and joints to prevent air leakage and maintain system efficiency.

Technical & Performance Notes

• The narrow throat (2.25″) introduces a higher velocity and potential pressure drop — ensure system design accommodates this without excessive noise or restriction.
• Galvanized steel and hot-dip galvanization protect against rusting in indoor HVAC environments.
• At 30 gauge thickness, the boot is moderately rigid but should be handled carefully to avoid dents or deformation during installation.
• Proper alignment with the duct end and register face is critical to avoid turbulence or inefficiency in airflow.
• Use of sealing materials (foil tape or mastic) on seams and edges is strongly recommended to preserve system performance.