FRAM CA10714 Extra Guard Heavy Duty Air Filter in Disposable Housing FRAM heavy duty air filters offer extensive coverage for both on and off highway applications with both traditional and radial seal designs Many have self-spaced pleat (SSP) technology to help eliminate pleat bunching and provide uniform pleat spacing for even distribution of contaminants and extended filter life FRAM heavy duty air filters use high-quality urethane gaskets for better filter-to-housing seal FRAM radial seal designs utilize urethane that provides balance between rigid and soft for a tighter seal while maintaining ease of installation