Round and Porthole Window Blinds and Shutters | Avanti Shaped
SEEYE Arch Window Blackout Shades, Pleated Fabric Blind (Radius: 24'') Half Circle Cellular Cordless Semicircular Blinds with No Tools, Half-Round Shade Easy to Cut and Install : Amazon.co.uk: Home & Kitchen
Innovation Blinds & Shutters - Porthole shutter solution A great solution for a round window, the Shutter not only looks fantastic it also neatens up the edge of the plastered window reveal.