If you’re speccing HVAC upgrades, Fiberglass Filter Media keeps popping up—partly because it balances low resistance with steady capture efficiency, and partly because supply chains for synthetics have been bumpy. From my latest visits to Handan and a couple of paint plants, it’s clear the sweet spot right now is laminated composites with stitched seams and stable F7–F9 performance.
This particular media—“Fiberglass Pocket Filter Media,” made in Second Buliding and Studying No21 shiji street, Handan, Hebei China—uses ultra fiberglass fibers in a laminated stack, then a stitched sewing process to keep pleat geometry honest under load. Features are simple: low resistance, high efficiency, sane pricing. Many customers say it “just works,” which, to be honest, is what you need in bag and panel filters.
Trends: tighter IAQ targets (ISO 16890), more data logging, and a nudge toward MERV 13+ in commercial buildings. You’ll see Fiberglass Filter Media in hospitals, pharma auxiliaries, food packaging, battery plants, and especially automotive paint booths where temperature and overspray demand stable media.
| Parameter | Typical value (≈) |
|---|---|
| Efficiency class | F5–F9 (ISO 16890 ≈ ePM2.5 50–85%); custom up to MERV 15 available |
| Initial ΔP @ 2.5 m/s | 70–140 Pa |
| Final ΔP (recommended) | 300–450 Pa |
| Dust holding capacity | 250–450 g/m² |
| Basis weight / thickness | 120–260 g/m²; 6–18 mm |
| Temperature limit | ≤ 120°C continuous |
| Fire performance | UL 900 Class 2 / DIN 53438-F1 options |
| Formats | Rolls (0.6–2.0 m width), custom cut for pockets/panels |
| Vendor | Lead time | Customization | Certs |
|---|---|---|---|
| Specialist manufacturer (Hebei) | 10–18 days | Widths, basis weight, carbon layer | ISO 9001, UL 900 (option) |
| General HVAC supplier | 2–4 weeks | Limited SKUs | Basic COA |
| Low-cost importer | Variable | Minimal | Mixed documentation |
Typical F7 build I observed tested at ePM2.5 ≈ 75% ±5%, initial ΔP 95 Pa @ 2.5 m/s, dust holding ≈ 350 g/m² under ISO A2 dust. Certificates include ISO 9001 factory QA and, on request, UL 900 Class 2. Ask for an ISO 16890 report plus ASHRAE 52.2 MERV mapping; it saves back-and-forth later.
Customer feedback is consistent: low resistance out of the box, predictable loading curve, and less variability batch-to-batch than some synthetics. Surprisingly, installers love the stitched seams more than they’ll admit—it keeps pocket shape during rush installs.
Origin: Second Buliding and Studying No21 shiji street, Handan, Hebei China. For specs, quotes, or COAs, reference Fiberglass Filter Media “Pocket” series and note your target class (F5–F9) and face velocity.
