540/640 - Residential Supply Grille

540, 640

Overview

The 540/640 Residential Supply Grille is available with a standard or split section parallel blade damper. The
front blades are individually adjustable for pattern direction control, while an integrated damper provides volume
control. The 540/640 is ideally suited for apartment, condominium, or residential applications.

Construction Options

  • Material
    • Steel (540/540S)
    • Aluminum (640/640S)
  • Damper Style
    • Standard parallel blade (540/640)
    • Split section, dual operator (540S/640S)
  • Fastening
    • Countersunk screw holes
    • Lanced frame