YIDINGAIR FILTRATION
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YIDINGAIR FILTRATION
Technical Guides
2026-09-27
The three main HEPA constructions suit different places: mini-pleat panels for ceilings and FFUs, V-bank and box filters for high-airflow AHUs, separator filters for rugged or hot duty.
Key points
All three filters use micro-glass fibre paper; what differs is how the pleats are formed and held apart. That changes depth, weight, airflow capacity and where the filter fits.
| Mini-pleat panel | V-bank / box mini-pleat | Separator (deep-pleat) | |
|---|---|---|---|
| Pleat spacing | Hot-melt adhesive beads | Hot-melt adhesive beads | Corrugated aluminium separators |
| Depth | 50 or 70 mm | 292 mm | 150 or 292 mm |
| Where it fits | Ceiling grids, FFUs, clean benches | AHU and duct housings | AHU and duct housings |
| Airflow | Low per unit, many units | Highest per slot | Standard or high-airflow series |
| Weight | Lightest | Light | Heaviest |
| High temperature | Standard only | Standard only | Special builds available |
| Yiding models | AR302 | AR303 V-bank, AR301/304 Hi-PACK | Separator-type HEPA |
Shallow mini-pleat panels are the final filter at the point where air enters the cleanroom — in ceiling grids, room-side housings, fan filter units and clean benches. Their low weight and depth save ceiling space, and gel-seal or gasket frames match the ceiling system.
When the HEPA stage sits in the air handling unit, depth is available and airflow per slot matters. Setting several mini-pleat panels in a V, or packing continuous mini-pleat media into a 292 mm box, gives a large media area in a standard 592 or 610 mm face size. In our catalogue a 610 × 610 × 292 mm V-bank is rated at 3,400 compared with 1,900 for a standard-series separator filter of the same size.
The traditional deep-pleat filter with aluminium separators is heavier, but it is robust and remains the usual base for high-temperature filters, where hot-melt spacers are not suitable. Choose it for hot process air or where an existing housing was designed for separator filters.
Usually, yes — both are made in 292 mm deep, 592/610 mm face sizes. Check the gasket position and the airflow so the pressure drop stays within your fan's capacity.
Hot-melt adhesive beads replace the aluminium separators, removing most of the metal and allowing tighter pleat spacing.
Mini-pleat panels, because FFUs need a shallow, light filter that fits the ceiling module.
Low-profile filtration for critical clean environments.
High-area filtration in a compact V-bank format.
Continuous mini-pleat media for final-stage filtration.
Deep-pleat filtration with corrugated separators.