Based on this product's specifications, here are some alternatives and similar models
WAVIN COVER S&W 50 PVC grey – PVC inspection chamber cover for 50 mm pipe
Summary description:
WAVIN COVER S&W 50 PVC grey is a PVC cover designed for inspection or access points on 50 mm drainage or sewer pipe systems. Made from durable PVC material, it provides a fitted closure for S&W-style chambers or access fittings. Suitable for use in residential and light-commercial plumbing installations where a secure, corrosion-resistant access cover is required.