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Home/Products/Other PP Products/HVAC Fresh Air System Filter – Low Resistance PP Honeycomb Pre-Filter

HVAC Fresh Air System Filter – Low Resistance PP Honeycomb Pre-Filter

Model: RW-FS-HC-008

A low resistance polypropylene honeycomb pre-filter for HVAC fresh air systems, designed to take coarse loading off the primary filter while adding minimal static pressure to the air path. Reusable, washable and cut to your unit's dimensions.

Fresh air handling brings in whatever is outside. Putting a washable pre-filter ahead of the main filter extends primary media life and stabilises pressure drop across the unit, without asking the supply fan for more work.

MaterialPP (Polypropylene) Hollow Board
StructureHoneycomb Through-Hole Grid
Thickness2–12 mm (customizable)
ApplicationHVAC fresh air / make-up air pre-filter
TargetCoarse loading, low static pressure
SizeCut to any length × width
ColourBlack / White / Grey / Blue / Green / Custom
MOQFlexible — negotiable
Lead TimeNegotiable (factory direct)

The Pre-Filter Argument

Primary HVAC filters are expensive and they load fastest when they are doing coarse work they were never specified for. A pre-filter takes that coarse fraction cheaply and washably, leaving the primary filter to do the job it was chosen for.

Resistance Is the Constraint

Anything added to the air path costs static pressure, and HVAC fans have limited reserve. This panel uses a high open area honeycomb specifically to keep that cost low; if your unit has a tight static budget, tell us the figure and we will size the panel to stay inside it.

Fitting It to Standard Plant

We cut to the panel dimensions of most standard air handling units, including cut-outs and fixing holes for common frame systems. Send the unit model or the frame drawing and we will confirm what we can supply before production.

Key Features

Low pressure drop keeps fan static pressure within the unit's design envelope
Extends primary filter service life by taking the coarse fraction first
Reusable and washable, reducing consumable spend across multiple air handling units
Non-toxic and odour-free polypropylene; food-grade raw material available on request
Easy to fabricate — can be cut, drilled and welded to fit existing equipment and duct openings
100% recyclable polypropylene supports green procurement goals

Technical Specifications

MaterialPolypropylene (PP) hollow board
Thickness Range2–12 mm (other thicknesses on request)
Sheet SizeCut to specification — any length × width
Colour OptionsBlack, white, grey, blue, green, custom
Service Temperature-10 °C to +80 °C
ProcessingCut, drilled, welded to suit the installation
Cleaning MethodWater rinse, air-dry, reinstall — no special tools or chemicals
Recyclability100% recyclable polypropylene
ComplianceRoHS / REACH documentation available on request
SupplyFactory direct; OEM/ODM supported; samples available

Applications

Air Handling Units
Pre-filtration stage ahead of bag or cartridge filters.
Make-Up Air Units
Intake screens for industrial make-up air systems.
Energy Recovery Ventilators
Protects heat exchange cores from dust loading.
Dedicated Outdoor Air Systems
First-stage filtration for DOAS equipment.

About Rulowin

Rulowin is a professional manufacturer of PP corrugated sheets, PP honeycomb panels, and reusable plastic packaging solutions. We serve logistics, automotive, electronics, agriculture, and industrial customers worldwide with OEM/ODM customization, from structural design to mass production. Our products comply with PPWR, RoHS, REACH, FDA, and other international standards, and are exported to Europe, North America, Southeast Asia, the Middle East, and South America.

Frequently Asked Questions

Will this change my unit's total static pressure?

It adds some resistance, as any filter does, but the honeycomb grid is designed for low pressure drop. Tell us the design airflow and allowable static and we will specify accordingly.

How much longer will my primary filters last?

That depends on your outdoor air quality. The pre-filter takes the coarse fraction, so downstream media loads more slowly and intervals between changes lengthen.

Can it be cleaned in place?

Panels are removed for rinsing in most designs, which takes a few minutes. Tell us how your unit is configured and we will advise on access.

Do you supply to unit dimensions?

Yes, including cut-outs and fixing holes to suit standard frame systems.

Engineering reusable PP packaging for global industry

Rulowin supplies precision-engineered, reusable PP packaging - honeycomb panels, corrugated sheet, crates, boxes and reels - for automotive, optical fibre, electronics and industrial supply chains.


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