Lindab Half Round Universal Internal Corner Overflow Protector Polyester Painted Dark Grey Used to fix on inner gutter angle 90 degree to prevent rainwater from overflowing. Can be used with 100mm, 125mm, 150mm and 190mm gutters. Dimensions Diameter: 100mm - 190mm. Description When it comes to creating beautiful, environmentally friendly and maintenance free buildings, using the right materials is everything. The Lindab Rainline„ Steel Rainwater system uses the very best in lightweight galvanised steel to create a contemporary, cost effective and eco-friendly guttering system that wont shrink, split or leak “ and looks great too. Each piece of core steel is coated with 275g zinc per square metre, a naturally self-healing coating that wont discolour or rust. The coating on both our High Build Polyester and Aluzinc guttering systems, are guaranteed for 15 years with a life expectancy in excess of 70 years. Rainline is ideal for modern and traditional buildings for both refurbishments and new build projects. Gutters and downpipes simply push together without the need for any special tools or sealants. Properties Steel is the ultimate material for roof-drainage systems. It is much lighter than cast iron, is easier to handle than aluminium and offers minimal thermal movement compared to plastic (which can move and crack causing leaks). Lindabs steel also has the lowest CO2 impact of any competitor. Low maintenance The only maintenance required is an occasional wipe or wash down. Easy assembly and installation guarantee a long service life. Vandal resistant Highly resistant to attack from vandals “ can be fixed flush to a wall to prevent anyone climbing up the downpipe Minimum environmental impact Tests have proven that Rainline steel systems reflect the lowest cradle-to-grave impact by minimizing the use of raw materials, components, energy, packaging and transport. Cost-effective solution Competitively priced against leading plastic systems and inexpensive compared with aluminium and cast iron.