The SPT-10 Pad, measuring 10" x 21", is engineered for superior air filtration and comes in a pack of 25. Made from high-quality synthetic fibers, this pad effectively traps dust and allergens, enhancing indoor air quality. Its design is compatible with various HVAC systems, making it a versatile choice for both residential and commercial environments. The lightweight construction ensures easy installation and replacement, while the precise dimensions guarantee a snug fit in standard filter housings. This pad is an essential component for maintaining clean air in any space.