Quick Details ? Condition: New ? Efficiency: G4 ? Construction: Panel Filter ? Filtration Grade: Pre Filter ? Medium Material: Synthetic Fiber ? Place of Origin: Guangdong, China (Mainland) ? Brand Name: longwell ? Model Number: PF ? Dimension(L*W*H): 24"*24"*2" ? Weight: 3 ? Certification: ISO.CE ? Warranty: 360days ? After-sales Service Provided: Engineers available to service machinery overseas ? fireproof: ** Packaging & Delivery Packaging Details: carton box Delivery Detail: 7days Specifications High quality clean air exhasuted offer the best quality finish. Only use G4Rated Filters. The most commonly used pre filter in the HVAC industry, available in cleanable / washable media for simple and inexpensive maintenance. It's the workhorse designed to go on and on. It is an excellent choice as a pre filter to higher efficiency filter. Advantages: Comprehensive range of standard sizes available. Customized size & filter Construction is possible. Progressive density synthetic filter media. High dust holding capacity ensures long service life. Filters conform to EN 779 & ASHRAE 52.2 test standards. Excellent washability of most models. Application: CD ROM Picture Tube Manmade Fibre Hazardous Chemicals Computer Hardware Assembly Air Separation Polyester Film GAS MFG Aerospace Assembly