600 x 600mm Sealed & Locking Recessed Manhole Cover D400

The 600 x 600mm D400 sealed and locking recessed manhole cover is designed for heavy duty applications where both load capacity and sealing performance are required. Manufactured from ductile iron, it provides significantly higher strength and durability compared to galvanised steel recessed covers.

This cover is typically used in non-carriageway trafficked environments such as car parks, service yards, petrol stations and commercial premises where slow moving vehicle loads are common. The D400 classification allows it to withstand frequent loading without deformation.

The recessed tray allows block paving, asphalt or concrete infill, maintaining a flush surface while preserving access to the chamber below. The double seal design, used in combination with manhole grease, helps control odour escape and improves sealing consistency over time.

Incorrect specification often occurs when lighter duty covers are installed in trafficked areas. This product is designed specifically to handle those loads while still providing the benefits of a recessed, sealed system.

• D400 load rating suitable for heavy duty and trafficked applications
• Ductile iron construction provides high strength and long term durability
• Double seal system improves odour control when installed with grease
• Recessed tray allows block paving, asphalt or concrete infill
• Locking screws secure the cover and help prevent unauthorised access
• 600 x 600mm clear opening suits standard chamber sizes
• Integral keyholes allow safe lifting using compatible lifting keys
• Black coated finish provides basic surface protection

This cover is manufactured from spheroidal graphite ductile iron (EN-GJS-500-7), providing high strength and impact resistance under repeated loading. This material is used in heavy duty access covers where structural performance is critical, particularly in trafficked environments.

Product type: Sealed and locking recessed manhole cover
Suitable location: External non-carriageway trafficked areas
Clear opening: 600mm x 600mm
Overall frame size: 800mm x 800mm
Tray depth (recess depth): 100mm
Frame depth: 125mm
Material: Ductile iron
Finish: Black coated
Seal type: Double seal (grease assisted)
Locking: Screw locking
Load rating: D400
Lifting method: Lifting keys required
Fixings supplied: Not specified
Weight: 94kg
Standards: BS EN 124-2:2015 (Kitemark certified)
Options: Compatible lifting keys and sealing grease available separately