Paper card frame primary filters stand out for their design and thickness of up to 150mm. Its panel HVAC filter adopts media of grade G4, F6 and others. With the ingenious filter material pleating and metal support mesh overlay, strength of the filter is greatly enhanced. Besides, we choose wet-resistant paper card to ensure high strength in a wet environment. In addition, we offer customized services to meet the needs of different sizes and shapes.

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