DWL are Excellent! We wanted to replace our old PVC patio doors with aluminium sliding doors and the slimmest sightlines possible. We decided on DWL to supply and install Slimline 20 sliding doors in anthracite. From start to finish - Sales, Surveyor and Installers - DWL were so helpful, polite and professional. The job was completed on schedule last week and what an improvement the doors have made to our house - they are very smart and stylish and the slim sightlines have given us so much more glass therefore more light and view of the garden. The installation team worked very hard to get the job completed in the limited winter daylight hours and the making good of the interior plasterwork was completed afterwards - all to a very high standard. We are extremely pleased that we chose DWL to carry out this work and have no hesitation in recommending them to family and friends.