Advantage: This central vacuum bags can collect particles as small as 0.10 microns with a filtration efficiency of up to 98%, creating a clean and comfortable environment for homes.It is recommended to replace it once a year in March to maintain optimal performance. Household cleaning: This vx3918std central vacuum bags is suitable for various cleaning scenarios in the home, such as carpets, floors, sofas, beds, etc, and effectively collects dust, hair and other debris. Features: The filter media bags fits for nutone central vacuum accessories is made of transparent material, which is convenient for users to check the contents of the bag at any time, which is easy to manage and find. Easy to install: This vacuum bags for nutone central vacuum bags design is simple and straightforward, easy to install and remove, making it easy for users to clean and maintain. After-sales: If you have any questions or suggestions about our central vacuum accessories, please contact us by email, we will reply you within 24 hours. VX3918STD vacuum bags for nutone central vacuum made for use with Broan-NuTone's VX500 and VX1000 central vacuum systems.Replace bags twice a year to ensure the best performance and maximum efficiency.