This 594 x 594mm cardboard-frame panel filter is rated to the F9 standard, a very high efficiency grade suited to ducted air conditioning return air applications. It captures very fine dust, smoke and bacteria-carrying particles, sitting just below HEPA-grade performance, helping keep coils, ductwork and downstream components clean while maintaining good airflow through the system.
Built with a rigid cardboard frame and pleated filter media, it is designed as a disposable, drop-in replacement for a standard full-size AHU/return-air panel opening. Suited to applications with more demanding air quality requirements, such as healthcare-adjacent facilities, laboratories and commercial buildings needing superior filtration.
For best results, replace regularly as part of routine ducted air conditioning maintenance to protect system performance and indoor air quality.
