Quik-Align die-cut numbers and letters are self-spacing and self-aligning: the characters interlock to ensure perfect spacing for professional-looking results every time. Traditional sans serif Gothic font provides excellent legibility even at a distance. Card-mounted polyester film characters feature pressure-sensitive adhesive. Flexible material conforms to most surfaces and holds up to harsh environments, abrasion, and repeated spills and cleanings. Weathers up to 8 years outdoors, even longer indoors, and withstands wide temperature variations -40 deg F to 230 deg F.