Introducing our new PergoSTET 3m x 4m Aluminium/Steel Square Pergola in grey. These award-winning range of modern pergolas are rectangular in shape and are exclusive to Harbour Lifestyle. All PergoSTET pergolas provide shade in the summer heat, and can be switched to a fully waterproof louvred roof at a moment's notice should the great British weather suddenly change! All PergoSTET pergolas come with a 3 year warranty on the frame and 1 year warranty on the blinds and louvres.