Explore our high-performance filtration products manufactured under strict quality controls for commercial and industrial air handlers.
In modern commercial and industrial HVAC system designs, the Pre Pleat 40 16x25x4 filter serves as the critical first line of defense. Engineered to meet strict ASHRAE 52.2 standards, the term "Pre Pleat 40" signifies a standard of high-efficiency pleated pre-filtration, designed to deliver MERV 8 to MERV 11 performance metrics. The nominal dimensions of 16x25x4 inches represent a industry-wide standard for standard modular filter tracks, providing a significant surface area advantage over 1-inch and 2-inch alternatives.
By utilizing a deeper pleat profile (4 inches depth), this design significantly increases the media surface area within the standard 16x25 face boundary. A larger media area results in a lower face velocity, which decreases the initial resistance to airflow (static pressure drop). For facility managers and OEM procurement teams, this translated directly to lower electrical consumption on air handling units (AHUs) and extended service intervals.
Shenzhen Snow Peak Clean Technology Co., Ltd. is an integrated high-tech enterprise, specialized in air filtration products research and development, production, sales, import and export trade. We produce and supply: Pre-filter, pocket filter, HEPA filter, chemical filter; replacement HEPA filter, car cabin air filter, humidifier filter; pocket filter media, melt-blown composite filter media, and other high-performance filter materials; provide high quality air purification solutions and products for indoor air pollution control and air conditioning systems of civil and industrial buildings, microelectronics, pharmaceutical, laboratory, school, hospital clean room etc.
Combined with self-developed patented technology, our sterilizing antiviral HEPA filter can effectively filtrate fine particles, so that PM2.5 concentration down to 10 micrograms/m3, 5 times better than national standard; effectively inhibit the breeding of microorganisms, sterilization rate up to 99.9%, and no secondary pollution, removal of H1N1 virus efficiency as high as 99.99%.
Having 15 years of international air purification technology experience as the background, our company has standardized production workshop, dust-free filter workshop and first-class technology of HEPA filters production line and inspection line, independent research and development of fully automatic air filter production line, equipped with AMADA CNC punch and CNC bending machine as well as many other advanced high-end equipment, provide a strong guarantee for production and quality of air filtration and purification products.
By utilizing computerized automation in our Shenzhen facility, we maintain precise controls over pleat height, spacing, and adhesive distribution. The AMADA CNC punch and bending tooling allows us to construct high-strength, customizable outer frames for commercial HVAC installations. This mechanical advantage ensures frame stability under turbulent airflow conditions, preventing blow-by and structural failure.
OEM parts procurement managers face strict compliance mandates (ISO 16890 / EN 779 / ASHRAE 52.2). We construct filters matching actual sizing variations to fit air handlers manufactured in North America, Europe, and Asia without air bypass.
Operating in Shenzhen, China gives us direct access to high-performance, cost-effective synthetic fibers and galvanized steel meshes. This raw material security enables competitive unit pricing for high-volume contract orders.
Designed specifically to protect critical microelectronics, healthcare environments, and pharmaceutical facilities. By trapping 99.9% of bacteria and larger particulates, our pre-filters prevent early clogging of expensive terminal H13/H14 HEPA units.
The OEM Pre Pleat 40 (16x25x4) is commonly deployed across diverse technical landscapes. Understanding the distinct pressure requirements of these systems is vital for strategic inventory selection:
A major issue with standard 4-inch filters is pleat collapse under high humidity or high dynamic pressures. To mitigate this risk, Shenzhen Snow Peak integrates galvanized wire backing or high-rigidity polymer mesh grids onto the compound filter media before pleating.
Our pleat configuration features a radical V-pleat design which guarantees that the air enters and exits the media with minimal restriction. Using automated CNC machines, the spacing is kept uniform. This design avoids "pinching," which wastes filter surface area by blocking air flow.
Browse our extended replacement catalog, built to serve diverse commercial HVAC systems and medical purifiers worldwide.
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