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Pocket air filters are primarily used in HVAC systems, for industrial, commercial and residential buildings due to their high dust retention quality. Pocket filters can be used to remove both larger dust particles and fine particles, and can also be used as pre-filters for clean room filtration systems.
| Model | Actual size W×H×D(mm) |
Pocket Qty | Air flow (m³/h) |
Initial pressure drop(Pa) | ||||||
| G3 | G4 | F5 | F6 | F7 | F8 | F9 | ||||
| CG3D-17T-3A | 287×592×381 | 3 | 1700 | 52 | 61 | 68 | 82 | 135 | 165 | 210 |
| CG3D-28T-5A | 490×592×381 | 5 | 2850 | 52 | 61 | 68 | 82 | 135 | 165 | 210 |
| CG3D-34T-6A | 592×592×381 | 6 | 3400 | 52 | 61 | 68 | 82 | 135 | 165 | 210 |
| CG3D-17T-4A | 287×592×381 | 4 | 1700 | 49 | 57 | 63 | 75 | 126 | 150 | 192 |
| CG3D-34T-8A | 592×592×381 | 8 | 3400 | 49 | 57 | 63 | 75 | 126 | 150 | 192 |
| ZF5D-17T-3B | 287×592×533 | 3 | 1700 | 44 | 52 | 58 | 70 | 115 | 140 | 179 |
| ZF5D-28T-5B | 490×592×533 | 5 | 2850 | 44 | 52 | 58 | 70 | 115 | 140 | 179 |
| ZF5D-34T-6B | 592×592×533 | 6 | 3400 | 44 | 52 | 58 | 70 | 115 | 140 | 179 |
| ZF5D-17T-4B | 287×592×533 | 4 | 1700 | 41 | 48 | 53 | 63 | 106 | 126 | 161 |
| ZF5D-34T-8B | 592×592×533 | 8 | 3400 | 41 | 48 | 53 | 63 | 106 | 126 | 161 |
| ZF8D-17T-3C | 287×592×762 | 3 | 1700 | 33 | 39 | 44 | 52 | 86 | 118 | 150 |
| ZF8D-28T-5C | 490×592×762 | 5 | 2850 | 33 | 39 | 44 | 52 | 86 | 118 | 150 |
| ZF8D-34T-6C | 592×592×762 | 6 | 3400 | 33 | 39 | 44 | 52 | 86 | 118 | 150 |
| ZF8D-17T-4C | 287×592×762 | 4 | 1700 | 31 | 36 | 40 | 48 | 81 | 106 | 135 |
| ZF8D-34T-8C | 592×592×762 | 8 | 3400 | 31 | 36 | 40 | 48 | 81 | 106 | 135 |
Pocket air filters belong to medium-efficiency filters, with filtration grades ranging from G4 (coarse) to F9 (sub-high efficiency) (EN779/ISO 16890 standard). They are mainly used as pre-protection for medium-efficiency filters or high-efficiency filters in air conditioning systems. Its core performance characteristics are as follows:
1.Filtration efficiency and classification
-G4-F6 (coarse to medium efficiency) : Mainly used for intercepting particles ≥5μm (such as pollen and dust), with an efficiency of approximately 35% to 90% (ASHRAE 52.2).
-F7-F9 (medium-high efficiency to sub-high efficiency) : It can filter particles ≥1μm (such as bacteria and smoke dust), with an efficiency of 85% to 95% (for 0.4μm particles).
2. Large dust holding capacity & long service life
- Multi-bag structure (usually 4 to 12 bags) : It increases the filtration area, reduces air resistance, and has a dust holding capacity 2 to 3 times higher than that of panel filters, thus extending the replacement cycle.
- Filter material: Anti-fracture synthetic fibers or glass fibers are adopted.
3. Low wind resistance & energy saving
The initial pressure drop is approximately 30 to 150Pa (depending on the number of bags and air volume), the increase in air resistance is gentle, and the long-term operating energy consumption is relatively low.
4. Structural design advantages
- Detachable bag frame: Metal or ABS material frame, supporting repeated replacement of filter bags, reducing maintenance costs.
5. Application Scenarios
- Central air conditioning fresh air system: Pre-filtering protects the high-efficiency filter at the rear end (such as in hospitals and shopping malls).
- Pharmaceutical and food workshops: Medium-efficiency filtration (used in conjunction with high-efficiency filters).
- Industrial coating, electronics factories: Intercept dust, paint mist and other particulate matter.
- Commercial buildings and data centers: Air purification pretreatment.
Summary: Pocket air filters strike an excellent balance in terms of efficiency, dust holding capacity, and economy, making them the mainstream choice for high-efficiency filtration in air conditioning and ventilation systems, especially suitable for environments with high dust loads.
We have advanced HEPA filter testing machine to test the efficiency rate,pressure drop and non leakaging. We garrantee the products we shipped out were all good quality product.
SNYLI Environmental Technology (Shandong) Co., Ltd. (Abbr.: SNYLI) is a professional service provider of air purification products integrating R&D, design, production and sales for more than 10 years, with the registered brand of "SNYLI". We are a Company with ISO 9001:2015 and CE Certificates, our primary and medium filters are tested according to ISO 16890 and EN 779:2002. Each HEPA filter and ULPA filter will be scanned to detect possible leaks and filter performance, such as initial pressure drop and filter efficiency.
Since established in 2010, SNYLI always takes deeply contributing innovation and development of the air purification industry as its original intention and mission. With a decade of technology accumulation, SNYLI is growing up to a company with advanced manufacturing equipment, production technology, testing technology.
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