Quick answer

Replacing the rear grille on your Duux Whisper Flex Ultimate fan is a simple process that takes about 10 minutes. You only need to remove the front grille and fan blade to access the rear grille screws.

Before you start: what you need

The replacement rear grille (part number DXSP158) is designed specifically for Duux Whisper Flex Ultimate models DXCF15 and DXCF51. Using a grille from another model may not fit securely.

You will need a Phillips-head screwdriver and a soft cloth to protect the fan blades during removal. Work on a stable, flat surface with the fan unplugged.

When to replace the rear grille

Replace the rear grille if it is cracked, bent, or missing tabs that hold it in place. A damaged grille can allow debris into the motor housing or cause vibration noise.

The grille itself does not wear out from normal use — replacement is only needed after accidental damage or if the original was lost during cleaning or disassembly.

Step-by-step replacement guide

  1. Unplug the fan and remove the front grille: Disconnect the fan from the power outlet. Grip the front grille at the bottom edge and pull it gently away from the fan body. It is held by magnetic clips — no tools needed. Common mistake: pulling the front grille too hard can snap the plastic clips. Pull evenly from the bottom.
  2. Remove the fan blade: Hold the fan blade hub with one hand and turn the plastic retaining nut counterclockwise (usually a thumb screw). Lift the blade straight off the motor shaft. Checkpoint: note the orientation of the blade — it only fits one way on the flat motor shaft.
  3. Unscrew the rear grille: Locate the two or three screws around the perimeter of the rear grille. Remove them with a Phillips-head screwdriver and set them aside. The rear grille will now be loose. Common mistake: losing the small screws. Place them in a cup or on a magnetized tray.
  4. Install the new rear grille: Align the new grille so the screw holes match the fan housing. Insert and tighten the screws gently — do not overtighten. Ensure the grille sits flush against the housing. Checkpoint: if the grille does not sit flush, check that no wires are pinched between the grille and the housing.
  5. Reattach the fan blade and front grille: Slide the fan blade back onto the motor shaft in the correct orientation. Tighten the retaining nut by hand. Snap the front grille back into place until you hear the magnets click. Common mistake: the blade may wobble if the nut is not fully tightened. Spin the blade by hand to check for smooth rotation before plugging in.
  6. Test the fan: Plug the fan in and run it at low speed. Listen for unusual noises and check that the grille does not vibrate. If everything is quiet, the replacement is complete. Checkpoint: a rattling sound usually means a screw is loose or the grille is not fully seated.

Product facts

  • Rear grille Whisper Flex Ultimate White: The Rear Grille Whisper Flex Ultimate White is a replacement rear grille for the Duux Whisper Flex Ultimate fan in white, compatible with models DXCF15 and DXCF51. Using the correct model-specific grille ensures a secure fit and proper airflow, preventing rattles or misalignment.

    Rear grille Whisper Flex Ultimate White

    Rear grille Whisper Flex Ultimate White