Specifications Brand: AMI PARTS Size: 6.5 x 4.8 x 0.4 inches Material: Activated Carbon Replacement cycle: 3-6 months Tools: No Tools Needed Function: Absorb Odor Compatible Devices PAULTRA, 242047804; Pure Air Ultra, Pure, PS1993820, 241754002, 7241754001; EAFCBF, 242047801, 241754001; PureAir Ultra, Pure Advantage, 242061001; SCPUREAIR2PK Premium Activated Carbon Material The air filter refrigerator is made of activated carbon with strong adsorption, which is more effective than the traditional baking soda filtration material in absorbing odors, fumes, volatile organic compounds and removing impurities. Surface Pleated Design This refrigerator air filter features a surface pleated design. This increases the surface area of the activated carbon filter, which is able to better absorb odors from the refrigerator, thus increasing the efficiency of this filter. Easy to Install No Tools are Required！ This refrigerator air filter is designed to be simple and quick to install,Open the box ①Mark the installation month on the edge of the refrigerator air filter ②Tear the jagged edges and pull out the side with activated carbon ③Place in the refrigerator