- The top sections are available in a standard and in a long version
- Standard top sections cover the following types of floor structures
- Type A: Floor structure without any insulation
- Type B: Floor structure is insulated by thickness of floor covering
- Type C: Floor structure is insulated by PVC covering
- Type E: Floor structure with a sealing membrane
- Type F: Floor structure is insulated by two sealing membranes
Gully tops
Standard top sections

Top sections for composite sealing

- Top sections with thin bed seals cover the following types of floor structures
- Type D: Floor structure with thin bed sealing
Top sections with sanded flange for thin bead sealing

- Top sections with thin bed seals cover the following types of floor structures
- Type D: Floor structure with thin bed sealing