Lennox Y5319 – Filtration Group 10387 Aerostar Series 400 Pleated Air Filter is a dependable OEM HVAC replacement filter designed for consistent performance, system protection, and improved indoor air quality. This pleated air filter features MERV 8 filtration efficiency, effectively capturing dust, pollen, lint, and other common airborne particles while maintaining proper airflow through the system.

With a nominal size of 18 x 24 x 2 inches and an airflow capacity of up to 1500 CFM, this filter is engineered to balance filtration efficiency and low pressure drop, helping HVAC systems operate efficiently without unnecessary strain on blowers or motors. The pleated media construction increases surface area, allowing for longer service life compared to standard fiberglass filters.

Manufactured by Filtration Group, the Aerostar Series 400 is designed for use in residential and light commercial HVAC applications where reliable filtration and consistent fit are critical. This core product is ideal for routine maintenance, protecting internal HVAC components from dust buildup while supporting cleaner air circulation throughout the space.

A direct replacement for Lennox Y5319, this pleated air filter is well suited for homeowners, contractors, and facility managers looking for a cost-effective, OEM-quality air filtration solution. Available from Beenimax, it is a trusted choice for maintaining HVAC performance, extending equipment life, and supporting overall system efficiency.