EN
GUANLIN AHU primary filter replacement panel, G4 pleated paper frame element for air handling unit filter banks.
G4 primary efficiency replacement panels for AHU filter banks, drop-in elements that restore the first filtration stage without changing frames or housings.
Description
Every AHU filter bank eventually reaches the point where the frames are fine but the elements are finished. At that point the maintenance decision is simple: buy replacement elements that drop straight into the existing tracks, or rebuild the whole bank. The first option costs a fraction and takes an afternoon. GUANLIN replacement panels are dimensioned to standard AHU tracks so no modification is needed.
Why Choose GUANLIN AHU Replacement Panels
- Drop-in fit — standard AHU track dimensions, no frame modification.
- G4 efficiency — restores the first stage to original specification.
- Rigid paper frame — holds shape in humid air handling units.
- Low initial resistance — minimal fan energy penalty.
- Bulk supply — economical for multi-bank buildings.
- Custom sizes — any dimension to your track.
Application Scenarios
Commercial building AHUs
Routine replacement across multiple filter banks.
Hospital central plant
First stage restoration ahead of medium and HEPA.
Cleanroom air handling
Primary stage protection for terminal HEPA units.
Industrial make-up air units
Coarse filtration at low cost per element.
Data centre cooling AHUs
Coil protection with minimal fan penalty.
Retrofit of legacy AHUs
Restoring original filtration without rebuilding the bank.
Our Factory
GUANLIN has manufactured filtration products in Dongguan since 2003, operating a 6,000 m² plant with automated filter bag sewing lines, automated singeing equipment, cage welding systems and pleated filter production lines. Products are exported to Singapore, Vietnam, Malaysia and other markets, with ISO 9001 and ISO 14001 certified quality management.
Product Specifications
| Item | Specification |
| Efficiency | G4 (EN 779) |
| Media | Synthetic fibre pleated |
| Frame | Moisture resistant paper |
| Thickness | 21–46 mm |
| MOQ | 50 pcs |
FAQ
Q1. Will it fit my existing tracks?
Standard AHU track dimensions; send the size to confirm.
Q2. How often to replace?
Typically 1–3 months depending on dust load.
Q3. Can I upgrade to a higher efficiency?
Yes, G4 and MERV grades share the same frame platform.
Q4. MOQ and lead time?
50 pcs, 10–20 days.
Key Specifications
- Efficiency: G4 (EN 779)
- Frame: moisture resistant paper
- Fit: drop-in replacement
- MOQ: 50 pcs
