Ordered PVC trunking but dimensions, crucially, the cross section was much smaller than advertised in the product listing. The product was therefore entirely unsuitable for my needs as I needed a minimum internal cross sectional area to accommodate extractor fan ducting. In fairness to CoolEasy, they investigated the issue quickly and it seems the manufacturer specification documentation was incorrect. There was no quibble offering a refund and they didn't put me through the hassle of having to return the goods. So, although my rating is given as poor as my requirements were not met, the way they dealt with the issue was satisfactory under the circumstances.