The Filtratech extended surface, medium efficiency disposable air filters are used in built up filter banks, central air handling systems, or side access housings. These filters contain a high loft, reinforced non-woven cotton/synthetic blend media continuously laminated to an expanded metal grid and enclosed in high strength carrier board.

Filters are available in three standard thicknesses: 25mm, 50mm and 100mm nominal.
Typically these filters have an average arrestance (Test Dust No. 4) of around 92% and an average efficiency (Test Dust No. 1) of at least 30%. Minimum efficiency (Test Dust No. 1) exceeds 20%. F5 Rated.

This is a disposable type filter that should not be cleaned. Recommended replacement is approximately every 6 - 12 months. Suitable replacement for 'Clean Flow' filters.

Built to work hard and throw away fast.

This isn’t your average panel filter that you end up washing and risking mould months later. Meet the G4 extended‑surface disposable filter—a blend of high‑loft non‑wovens, expanded metal grid, and a tough cardboard frame.

Zero maintenance. Just replace.

Stop washing, stop soaking in mould. Replace the filter every 6–12 months, depending on conditions—bye-bye to the gross habits.

Why it matters.

Dirty filters sabotage airflow, put strain on your unit, jack up energy bills, and breed health risks. This filter doesn’t just trap particles—it plays defense while keeping your system and lungs cleaner. Don’t get caught out with cheap, aftermarket garbage.

Product colour may differ and may at times be substituted for same specification alternative brand.