Thrion SLBL1 high Quality Slimline White Single Gang Blank Plate This SLBL1 Slimline White Single Gang Blank Plate from Thrion, is a retrofit blank that offers an aesthetically pleasing and ultra-slim design. Great features of the Thrion Ultimate White Moulded include curved rockers with a tactile switch action and screw cap covers to provide a sleek finish. These Thrion Ultimate White Moulded range, which includes euro modular and grid variants, was designed to complement the Ultimate screwless and flat plate ranges for situations where a combination of fittings may be required. Features: