How to Replace the Whisper Flex Smart/Ultimate Rear Grille

By Duux | The Flow of Comfort | Published: 2026-10-28

Category: How-to Guides

Step-by-step instructions for removing and installing a new rear grille on the Duux Whisper Flex Smart or Ultimate fan. Includes common mistakes and checkpoints.

Quick Answer

Replacing the rear grille on a Duux Whisper Flex Smart or Ultimate fan is a simple task that requires only a screwdriver and about 10 minutes. Follow the steps below to safely remove the old grille and install a new one.

Why You Might Need to Replace the Rear Grille

The rear grille protects the fan motor and blades from dust and debris. Over time, it can become cracked, warped, or damaged, affecting fan performance and safety. Replacing it restores proper airflow and prevents foreign objects from entering the fan housing.

What You'll Need

You'll need a Phillips-head screwdriver and a replacement rear grille compatible with your Whisper Flex model. The Rear Grille Whisper Flex Smart/Ultimate Greige (SKU: DXSP300) fits both DXCF52 and DXCF56 types. Ensure you have the correct color and model before starting.

Step-by-Step Replacement Guide

1. Unplug the Fan: Disconnect the fan from the power source. This prevents accidental activation and electrical shock. Never work on a plugged-in fan.
2. Remove the Front Grille: Locate the retaining ring or screws securing the front grille. Unscrew or unclip it, then lift the front grille away from the fan housing. Keep the screws in a safe place; you'll need them for reassembly.
3. Access the Rear Grille: With the front grille removed, you can see the rear grille attached to the motor housing. It is usually held by screws or clips. If the rear grille feels stuck, check for hidden screws or clips before forcing it.
4. Remove the Old Rear Grille: Unscrew the screws or release the clips securing the rear grille. Gently pull the grille away from the motor housing. Avoid tugging on the grille too hard; it may be attached to the motor bracket.
5. Install the New Rear Grille: Align the new rear grille with the mounting holes on the motor housing. Press it into place and secure it with the screws or clips you removed earlier. Tighten screws evenly to prevent the grille from warping.
6. Reattach the Front Grille: Place the front grille back onto the fan housing and secure it with the retaining ring or screws. Ensure it is snug but not overtightened. Check that the front grille is centered and does not rub against the blades.
7. Test the Fan: Plug the fan back in and turn it on. Listen for any unusual noises or vibrations. If everything sounds normal, the replacement is complete. If you hear rattling, stop immediately and check that all screws are tight.

Product Facts

Rear Grille Whisper Flex Smart/Ultimate Greige: This rear grille is supplied in Greige and is compatible with Whisper Flex types DXCF52 and DXCF56. It ensures you order the correct part for your specific Duux fan model, avoiding fitment issues.
Rear Grille Whisper Flex Smart/Ultimate Greige