438mm x 438mm Square to Round 220mm to 300mm Dia
- Clear-opening = 220 – 300 dia
- Overall size = 438 x 438
- Depth, frame = 37 Depth, overall = 97
- Weight (kgs): 4.0
- Load Rating Classification: 35kN (Domestic driveway)
- Load Test Data: 35kN held for 30 secs
- Features: – Square-to-round design, perfect partner for CD U353 base and CD U355 chamber risers
- Unique stepped spigot/reducer also allows fitment to most other major manufacturer’s 220-300 dia chamber risers
- Corrosion-proof polypropylene cover and frame
- Can be rotated to match direction of paving
- Quick and easy to install
- Ideal for tarmac, grass or gravel areas
- Eliminates the need to cut paving around a circular opening
- Unique slip-resistant surface tread pattern
- Supplied with 4 locking screws
- Made from recycled material
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