21749 | LB-29333BK WHEEL (Same as R01254A001) | Lennox

The Lennox 21749 premium aftermarket replacement filter is vital for maintaining optimal airflow and efficiency in your Lennox HVAC system. This high-quality filter effectively captures dust, allergens, and impurities, ensuring cleaner and healthier indoor air. Designed with a durable construction, the 21749 filter can withstand the demands of everyday use and provides long-lasting performance. Its precise fit ensures a secure seal and prevents air leaks, maximizing filtration efficiency and preventing premature wear on your HVAC system. Trust the Lennox 21749 filter to safeguard your indoor air quality and extend the lifespan of your Lennox HVAC system. Our HVAC supply store offers competitive pricing and prompt shipping, making it the perfect choice for your HVAC filtration needs.