The distinctive top hat shape of each ice cube from Perlick's 15" Clear Ice Makers are more than attractive; the shape is part of Perlick's method in ensuring that each cube is absolutely free of impurities. This unique shape provides flawless look and taste, and prevents the ice from clumping. Available in standard or ADA-Compliant heights, all Perlick Ice Makers are UL-approved for outdoor use.