"This shallow bottle trap looked an ideal replacement for under the kitchen sink - as is compact so saves space. Unfortunately the bottom seal was faulty and leaks ( I had re-checked all fittings and tightened). I returned to Screwfix for a replacement where the staff were very helpful. I returned home to refit. Unfortunately the seal on the second item also leaked - from the same location - lower seal. Unfortunately I'll need to source from elsewhere. Perhaps screwfix could look to offer a slightly higher priced better quality product."