The Ducted Heat Pump Air Intake Filter, sized at 595x595x10mm, is a vital component for maintaining optimal air quality in your home. Experts at filter-specialists recommend changing the air filter on your ducted air conditioning return every year to ensure maximum efficiency. This airconditioning ducted filter is designed for effortless installation: simply remove the old, dirty filter and replace it with a new one. By doing so, you enhance the air quality in your living space. Please confirm the sizing is accurate before making a purchase to ensure compatibility with your system.