The AW & AWH products are recommended to be used directly under most HVAC equipment and in conjunction with structural metal bases and concrete inertia blocks. Baseplates of all versions are factory drilled to accomodate Secure and effective installation from the spring mount to the composition or flooring. -OtherHVAC Equipment: https://springdampervibrationmoun91357.gynoblog.com/38014308/considerations-to-know-about-industrial-applications