The HPF1 Non-DCTD Filter from BROAN-NU TONE LLC is a high-performance filtration solution designed for effective air purification. This filter is sold individually and is constructed from premium materials to ensure durability and efficiency. It is specifically designed to fit various BROAN ventilation systems, providing optimal filtration of airborne particles and odors. The non-DCTD design allows for easy installation and maintenance, making it a practical choice for homeowners and professionals. Regular replacement of this filter is essential for maintaining air quality and system performance.