A supplementary fire protection plate and hollow - in double floors for access panels and inspection plates in the parquet area

摘要

The present invention is a retrofittable fire protection plate and hollow - in double floors for access panels and inspection plates with parquet.In the following, the invention is explained with reference to a drawing shown.1The cross section of the fire protection plate with the respective threaded sleeves.2The cross section of the fire protection plate with the respective threaded sleeves in the parquet floor region.3The stainless steel cover plate for the parquet floor region.