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Vent Covers & Floor Registers

This section covers the parts that sit over a duct opening: floor registers with adjustable dampers, wall and ceiling return grilles, magnetic covers for closing off unused vents, and deflectors that push air away from furniture or curtains.

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This section covers the parts that sit over a duct opening: floor registers with adjustable dampers, wall and ceiling return grilles, magnetic covers for closing off unused vents, and deflectors that push air away from furniture or curtains.

Sizing a register

  • Measure the hole in the floor or wall, not the old cover. A 4x10 register drops into a 4 x 10 in duct opening; its faceplate is larger.
  • Floor registers need a rated load. Steel registers handle foot traffic; plastic ones suit low-traffic rooms.
  • Magnetic covers only hold on steel registers. They will not stick to aluminum or plastic grilles.
  • Booster fans that sit in a register opening are listed under fans and ventilation.

Changing the filter at the same time? See HVAC and furnace air filters and the MERV rating chart.