Dust filter 140mm square by DEMCiflex, black/black

DEMCiflex 140mm square dust filter in black/black is a replacement mesh filter designed for standard 140 mm computer fans and ventilation cutouts. The square form factor fits chassis and radiator openings that accept 140 mm filters and provides a physical barrier to dust, hair and larger particles while allowing airflow through fan intakes and exhausts. The filter is intended for regular replacement to maintain consistent cooling performance and to reduce the frequency of internal case cleaning.

Advantages

The mesh material captures dust and debris without significantly restricting airflow, helping preserve fan efficiency. The square design provides broad coverage for 140 mm mounting areas and is easy to install or remove for cleaning or replacement. Its black frame and mesh offer a neutral appearance that integrates with most PC builds while providing durable protection to internal components.

Suitable for

• Replacement of 140 mm fan intake or exhaust filters in PC cases
• Use on radiator or chassis cutouts that accept square 140 mm filters
• Protecting internal components from dust in home or office environments

Key specifications

• Shape: square filter designed for 140 mm mounting areas
• Colour: black frame with black mesh
• Material: fine dust mesh suitable for air filtration without major airflow loss
• Compatibility: fits standard 140 mm fan openings and compatible chassis/radiator cutouts
• Function: removable, replaceable dust filtration for computer ventilation

How to use

Turn off the system and unplug power before removing a panel or fan assembly. Align the square filter with the 140 mm mounting area and secure it in place using the case clips, screws or frame mounts provided by the chassis. For filters installed on fan intakes, place the filter on the exterior side of the case to catch incoming dust. Remove and rinse or replace the filter periodically according to dust accumulation and cooling performance.

Usage recommendations

Check filter condition every 1–3 months depending on environment; clean with gentle water rinse and dry thoroughly before reinstalling, or replace the filter if damaged or heavily clogged. Avoid using harsh chemicals or abrasive cleaning methods to preserve the mesh. Ensure the filter does not obstruct fan blades or interfere with mounting hardware.