Please note: this product is made to order and therefore non-returnable BLÜCHER® access covers are produced from 2 mm stainless steel providing a high level of stability and durability. The access covers are designed with “eyes” and a taper fit for easy lifting and access. You can lift the covers manually or choose to use lifting equipment. A sealing ring below the lid prevents smell from spreading and ensures a water-tight solution.n The access covers fulfill the standard EN 124. The cover can be mounted/fitted to the frame, and concrete anchors are pre-mounted for safe construction. Use of concrete C35/C45 guarantees the load class mentioned below.