Baseplates of all models are manufacturing facility drilled to accomodate Harmless and effective installation on the spring mount to your construction or flooring. If a product You purchase from us is not really as described, Your sole solution is to return it in unused issue. When the deflection is specified https://spring-isolators-for-tran14689.blog2learn.com/76794218/a-review-of-spring-isolators-ceiling