PREMIUM MERV 8 TRIPLE FILTRATION: A floor vent and air vent filter kit – Our cut-to-fit air filter media roll is designed for home vent filter needs. Made from 100% polyester, it helps capture dust and debris before they enter your vents. QUICK AND EASY INSTALLATION: Measure, cut, and install! Place the filter so air flows through the designated white and blue sides. Compatible with many sizes of air vents, registers, and grilles, including floor, ceiling, wall, window, and AC vents. Can be cut to standard sizes such as 4"x10", 4"x12", or circular vents. Ideal for DIY projects. GREAT VALUE FILTER MEDIA ROLL: Includes a 90" x 12" x 1/2" or 90" x 16" x 1/2" roll of premium filter material and 24" of adhesive hook tape. Suitable for RV air conditioner filters, mobile homes, campers, window AC filters, and more. MULTIPLE USES: Can be used as an air vent filter, return air filter, floor register filter, or for DIY projects such as ceiling fan filters, box fan filters, dryer vent filters, and more. MERV 8 FILTER MADE FROM 100% NON-WOVEN POLYESTER: Designed with two layers of progressively dense polyester media for effective dust and debris capture while maintaining airflow. Includes an adhesive layer for a triple-filtration setup. Northwest Enterprises focuses on providing high-quality air filters at affordable prices. This vent filter media roll can be cut to size and used to cover intake and return registers, air conditioner (AC) vents, or for DIY projects. Works with floor, ceiling, and wall vent registers in homes, RVs, mobile homes, and campers. Directions: Clean the register or vent to be filtered. Measure the vent opening. Transfer the dimensions to the filter using a pen or pencil. Cut the filter to size. Install the filter so air flows through the designated sides.