Recessed Manhole Cover – Square-To-Round 450 mm (CD450SR / CD450SR/46SL)

The CD450SR (or the sealed/lockable version CD450SR/46SL) is a recessed, galvanised steel manhole cover and frame designed for internal drainage or landscaped areas. Its square-to-round configuration allows it to cover a 450 mm diameter opening while providing a square outer frame for finishing.

Key Features & Specifications:

✔ Applications: Internal drainage, pedestrian & landscaping (light duty)

✔ Loading Capacity: 5 Tonne Gross Plated Weight (GPW)

✔ Cover Type: Recessed for tiling, screeding or block paving infill; tray can be rotated within frame to align paving pattern

✔ Material: Galvanised steel cover / tray, recycled polypropylene frame

✔ Lifting Keys / Handles: Integral lifting handles, tested to approximately 60 kg direct lift

✔ Sealing: Factory-fitted neoprene gasket (for sealed / locking version) to reduce odour ingress

✔ Locking: Locking screws included on the sealed (46SL) version

Dimensions:

• Internal / Clear Opening: 450 mm diameter
• External (Frame): 580 mm × 580 mm
• Depth (Standard): ~ 54 mm (for “46SL” shallow version)
• Depth (Alternative): ~ 88 mm (for deeper / block paving version)

A robust, recessed manhole cover ideal for light-duty internal or landscaped installations, offering a flush finish with optional sealing and locking.