- Top sections for both lockable and loosely inserted designer gratings
- Suitable for both square and circular stainless steel designer gratings
- Suitable for square designer gratings made of glass
- 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 E: Floor structure with a sealing membrane
- Type F: Floor structure is insulated by two sealing membranes
- Top sections with thin bed seals cover the following types of floor structures
- Type D: Floor structure with thin bed sealing
Gully tops
Top sections for

Standard top sections

- Top sections with square and circular gratings
- Lockable or loosely inserted square gratings
Top sections for composite sealing

- Top sections with square and circular gratings
- Lockable or loosely inserted square gratings
- Top sections with thin bed seals cover the following types of floor structures
- Floor structure with thin bed sealing
Top sections for customer choice of surfaces

- Top sections for optional surfaces
- Standard top sections cover the following types of floor structures
- Top sections with thin bed seal cover the following types of floor structure