A pocket filter and a pleated panel filter can share a 595×595 mm face and still fail to replace each other. One forms non-woven media into pockets 600 mm deep; the other folds pleated media into a 46 mm frame. A straight pocket filter vs pleated panel filter comparison starts from that geometry, because the housing decides what a buyer can order.
This guide compares two Airy lines that buyers often weigh for air handling duty: the polyester pleated pre-panel series and the non-woven pocket series. Every figure comes from those product pages. Where a page lists a feature without a test method, the text says so, and the order sheet should carry the same caution.
Key Takeaways
- Structures differ first: the pocket filter vs pleated panel filter choice is 600 mm against 46 mm depth on a shared 595×595 face.
- Pleated reference: AR-ZK-G3 and G4 list 85% Und 90% average arrestance at 35 Und 45 Pa initial resistance.
- Pocket reference: the F5-F9 table lists 595×595×600 mm with 8 oder 6 pockets, plus narrower footprints by model.
What Are the Two Filter Structures?
Structure decides fit before media decides performance. Compare depth and face, then talk efficiency.
Airy’s pleated pre-filter page describes polyester fiber or non-woven media folded into pleats inside a shallow frame. It sells under a G3/G4/MERV 5-8 title, and the 46 mm depth keeps it close to a flat-panel footprint. The published table spans four footprints, 595×595×46 down to 495×495×46 mm, each with its own rated airflow from 3,200 down to 1,600 m³/h. The page places it in the primary filtration stage of air conditioning, Belüftung, and clean engineering projects.
Der non-woven pocket filter is a different object. Non-woven media is formed into a pack of pockets attached to a top frame, 600 mm deep. The overview credits resilient, non-hygroscopic polyester fibers that hold their structure in humid air, and lists the pack from G4 through F9 in its feature points. The published table details F5 to F9 models, color-coded by class: F5 orange, F6 green, F7 pink, F8 yellow, F9 white.
Same face, different objects. The next sections hold airflow, resistance, and maintenance against that geometry so the decision stays physical rather than verbal.
Can They Share a Housing, Stage, and Depth?
A shared face size is not a shared part. Slot depth rules before any performance number.
A shared 595×595 mm face does not establish interchangeability. Check the mounting frame, 600 mm of available downstream clearance, door access, and sealing for either format; a conversion may require an adapter or housing changes. Confirm usable depth, including door clearance, before comparing any published figure.
Depth is not empty volume, either. The pocket page attributes low initial resistance and high dust capacity to the large internal capacity of that deep pack. The pleated page credits a large filter area and low initial resistance inside 46 mm. Each format buys surface its own way, and our types of air filters guide maps both into the wider family.
Sealing belongs with depth. Neither page specifies how each format seals against its housing, so put that on the question list. Ask how the frame of each format meets the seat, what gasket or clamping the quotation assumes, and how the access door closes. Air that slips past either boundary carries dust straight to the next stage, no matter which format the drawing named.
Stage position follows the pages, within each page’s own scope. The pleated page places the panel in primary filtration. The pocket page describes second or third-stage filtration behind pre-panel filters for spray booth equipment. Neither page fixes a universal stage sequence for commercial HVAC systems, so let the AHU design decide the order. Ask the system designer before moving either format upstream of its claimed stage.
How Should Rated Airflow and Pressure Drop Be Compared?
Compare pressure drop only where the published airflows meet. Two sheets publish duty two ways.
The two pages publish duty differently. The pleated sheet gives one rated airflow per size, 3,200 m³/h at 595×595×46, plus an initial resistance and a recommended final of 250 Pa. The pocket sheet publishes three airflow–pressure-drop pairs for the 8-pocket configuration under a header reading Pressure Drop at Rated Airflow. Read the comparison table with that difference in mind. The pattern repeats across the pocket range. The 6-pocket version of the same face shifts its test points to 2100, 3200 Und 4300 m³/h. The narrow 3-pocket pack reads 1100, 1800 Und 2300 m³/h at the same three rising steps.
| Item | Pleated pre-panel example | Non-woven pocket example |
|---|---|---|
| Model shown | AR-ZK-G4 | AR-WD-F6, 8 pockets |
| Published size | 595×595×46 mm | 595×595×600 mm |
| Data provided | One rated airflow with initial and recommended final resistance | Three airflow–pressure-drop pairs |
| Check before ordering | Slot fit, rahmen, efficiency test basis | Housing depth, pocket clearance, efficiency test basis |
Product examples as listed on each Airy product page, not a unified specification; the pages state no shared test method, so the two columns are not a same-condition comparison.
Each page then states its own numbers. The pleated sheet lists the AR-ZK-G4 at 90% average arrestance, 45 Pa initial resistance, and a recommended final of 250 Pa. The pocket sheet labels the F6 model at 65% and gives 35, 65, Und 100 Pa at 2,300, 3,500, Und 4,500 m³/h. Read each figure inside its own class family and test basis; neither page provides a common method for a side-by-side rating.
Treat the pocket filter vs pleated panel filter question as a duty-point question. Put your design airflow on both sheets and ask for resistance at that point. A pocket tested at 2,300 m³/h and a panel rated at 3,200 m³/h describe different loads on different media. The fair line on the RFQ is your measured slot and your airflow, quoted against both formats.
How Do Dust Load and Maintenance Plans Affect Selection?
Neither page publishes dust-holding figures in grams. Request model data from the supplier before scheduling change-outs.
Dust holding shapes change-out frequency, and both pages claim high capacity: the pocket overview ties its internal volume to a longer service life. What the pages omit is the measured figure. Ask the supplier for model-level dust-holding data before a schedule rests on those claims.
Maintenance also needs a written answer. The pleated page lists washable as a feature but does not state which frame configurations tolerate washing, the method, or post-wash performance. The pocket page lists no washing feature, which is not proof that packs must be binned. Ask the supplier to confirm the maintenance method for the exact model before building a rotation plan.
A gauge closes the loop either way. Set the change-out point using the filter’s recommended final resistance together with the AHU manufacturer’s airflow and pressure limits, then monitor the pressure drop across the installed filter. Where the unit has no gauge, tie the schedule to runtime and observed loading, and review it after inspecting the first set of used media.
Write the plan down before the first unit ships. State the final resistance, who reads the gauge, how often, and what happens to the removed media. A one-line plan per position prevents the improvised swap that turns a sound filter decision into a bypass problem.
What Efficiency and Test Data Should Buyers Compare?
A class letter is a claim with a method behind it. Ask for the method.
The pleated line sells under G3, G4, und Merv 5-8 Etiketten, and the pocket table grades F5 through F9. Those letter families are not the same ruler, and the percentages behind them measure different things. Do not subtract 65% aus 90% and call one filter better. Ask which scale the destination market expects: the pleated title pairs G and MERV labels, and the pocket table works in the F range. A distributor stocking to an engineer’s schedule should confirm the required notation before choosing either format.
Filter ratings also drift from installed behavior. Der ASHRAE filtration and disinfection FAQ supports one principle this article leans on: filter performance has to be judged together with the airflow and condition of the actual system. That reference backs the principle only; it does not test, rate, or endorse specific Airy models.
Ask three things in writing: the test method behind each percentage, the resistance at your rated airflow, and the recommended final resistance for change-out. Our guide to sourcing HVAC filters from China shows where these checks sit inside a supplier evaluation.
When Should a Buyer Request Each Format?
Request the format your slot, stage, and duty already decided. The rest is paperwork.
Request the pleated panel when the slot is shallow and the AHU design places the position at the primary filtration stage. Request the pocket when the housing carries 600 mm of usable depth. It suits a downstream position behind pre-panels, where the dust load justifies the volume, confirmed against your own system design. Once the pleated panel wins that comparison, our pleated panel filter specifications guide lists the fields to confirm before ordering.
Do not assume interchangeability in either direction. When a project converts one stage into the other, re-verify depth, Versiegelung, and airflow for that position, and quote both formats at the same duty point before deciding. The published size tables on the two product pages are the starting point for that quotation, not the finished specification.
Häufig gestellte Fragen
Are pocket and pleated panel filters interchangeable?
Not by default. They can share a 595×595 face, but the pocket pack is 600 mm deep against 46 mm for the pleated panel, and each page claims a different filtration stage. Treat a swap as a possible housing modification: confirm depth, Versiegelung, and airflow with the supplier first.
Which measurements matter when replacing an HVAC filter?
Record the face width and height, the full depth including any frame lip, and the clear space behind the slot. Note how the filter seals and where the access door closes. Send those numbers with the airflow the position carries, not only the printed label from the old unit.
Does a pocket filter always have lower pressure drop?
NEIN. Airy’s pocket sheet publishes resistance at 2,300, 3,500, Und 4,500 m³/h, and each higher class reads higher at the same point. The pleated panel lists one rated airflow per size, so the two sheets do not share a test condition. Compare only at matching airflows and sizes, or request supplier data at your design airflow.
Letzte Gedanken
A pocket filter vs pleated panel filter choice is a building question before it is a catalog question. Depth, stage, duty airflow, and maintenance habit pick the format, and the class letter only labels the media inside it. Buy the geometry that matches the slot, then verify the numbers at your own airflow.
Compare Both Formats at Your Duty Point
Send your slot depth and face size, target class, measured airflow, and change-out plan. Ask Airy to confirm which models are available and what comparable data it can provide for both formats at the same duty for your review.
Product examples sit in the Tafel- und Faltenfilter catalog on the Luftiger Filter site.
