Made of high-quality polished aluminum material, with a 5-layer aluminum mesh design, it is not easy to rust; The frame is made of aluminum alloy plate to ensure that the filter screen is more sturdy and not easily deformed; The outer frame adopts a detachable design, making it easy to replace the filter medium. It can be cleaned with water and reused Efficient Grease and Particle Trapping: The high-density aluminum mesh filter effectively blocks kitchen grease and impurity particles, protecting the motor from damage and extending the lifespan of your appliance OEM standard dimensions: 11.5 * 11.5 * 0.35 inches(length x width x height); Easy to install and operate, no tools required, just find the interface of the new filter and insert it into the slot on the range hood Fits for Broan BXT1 and NuTone AR1 series Cleaning tip: Soak in hot water and degreaser for 10-20 minutes, gently stir to remove loose grease.To maintain the performance of the range hood, maintain air circulation and eliminate odors, it is recommended to replace the filter every 3-6 months