2-1/4" x 10" x 6" Register Boot, Center End

Lukjan Center End Register Boot — Series P17C, 6″ Ø, 10″ Length, 2-1/4″ Width

Air register boot used in HVAC ductwork to transition from a round duct to a register opening. The “center end” design directs airflow from a duct that terminates at the end and delivers air centrally into a grille/register. This Series P17C model is sized for 6-inch round duct and a narrow throat width.

• Series / model: P17C (Lukjan Center End Register Boot)
• Part / model reference: RB102106 (typical for 6″ × 10″ × 2¼″ variant) :contentReference[oaicite:0]{index=0}
• Nominal duct connection diameter: 6 inches (Ø 6″ round) :contentReference[oaicite:1]{index=1}
• Boot length (depth): 10 inches :contentReference[oaicite:2]{index=2}
• Throat width (narrow side opening width): 2-1/4 inches (2.25″) :contentReference[oaicite:3]{index=3}
• Material: Galvanized steel, 30 gauge thickness :contentReference[oaicite:4]{index=4}
• Finish: Hot-dip galvanized (for corrosion resistance) :contentReference[oaicite:5]{index=5}
• Weight (approx): 0.5 lb (each) :contentReference[oaicite:6]{index=6}
• Mounting / orientation: Center-end boot, meaning air enters from the round duct at the central end and discharges through the long throat opening to the side / face register
• Typical applications:
  • Residential or light commercial HVAC supply runs where a small boot is needed for a register grille.
  • Situations where the duct ends flush with a wall or floor and must deliver air into a narrow register opening.
• Compatibility notes:
  • Ensure the register grille (faceplate) opening matches or exceeds the throat width (2.25″) and length.
  • Verify that the duct system’s airflow and static pressure are within acceptable limits for small-throat boots to avoid noise or restriction.
  • Use proper sealing (foil tape or duct mastic) along seams and connections to prevent leakage.

Technical & Performance Notes

• The narrow throat width (2.25″) is relatively small; make sure velocity and pressure drop are acceptable for your HVAC design.
• The 30 gauge galvanized steel gives moderate rigidity and durability for indoor duct environments.
• Proper alignment and secure fastening to the round duct (usually via sheet-metal screws or seam method) is crucial to avoid vibration or air leakage.
• All seams should be sealed to maintain system efficiency and prevent air leakage.
• When selecting a face grille / register to pair with this boot, choose one with compatible dimensions and sufficient free area to minimize resistance.
• Because the boot is relatively shallow (10″), it can fit in tighter spaces but care must be taken not to kink or obstruct airflow in tight bends.