"Propane Tank Exchange" Die-Cut Antenna SignPropane tank exchanges have been gaining a lot of popularity, and this unique looking sign tells your customers everything they need to know, even if they're too far away to read it! Easily recognizable, this double sided antenna sign is die cut to shape, free standing & full color. Printed on 10mm corrugated plastic and mounted on our Antenna Sign Dual Spring Curb Frame (Sold Separately), it creates much more interest than a standard square insert.