Sun Shading Fins - PenumbraFind the perfect fit for your space with our bespoke sun shading options. Penumbra is a budget friendly and customisable window fin system, with shade and privacy options to suit any building. Select your arrangement of fins to give the ultimate flexibility, privacy and shading. With our range of patterns you can add your touch of style along with various levels of sun control increasing shade and reducing internal glare. Installed around windows the