Aerostar Series 1100 Pleated Furnace Air Filter 20x25x5 MERV 11 Replacement

The Aerostar Series 1100 pleated furnace air filter delivers advanced MERV 11 filtration performance with durable construction designed for residential, commercial, and industrial HVAC systems. Featuring 100% synthetic filter media, this filter provides efficient removal of airborne particles while maintaining consistent airflow and protecting HVAC equipment.

The synthetic media is laminated to an expanded metal support grid on the air-exiting side, preventing pleat fluttering and maintaining uniform pleat structure. The heavy-duty moisture-resistant frame, integrated media retainers, and bonded filter pack help eliminate air bypass while providing reliable performance during operation.

Designed as a 20x25x5 replacement filter for Honeywell FC100A1037 and Lennox systems, the Aerostar Series 1100 provides low initial pressure drop, extended filter life, and improved filtration compared to standard flat filters. It is an excellent choice for applications requiring higher-efficiency HVAC filtration.