TEC 15030419 Power Grout 25 lb AccuColor Plus Grout Ta-450 / 905 Light Gray is an advanced performance grout that delivers color consistent grout joints from 1/16" to 1/2" (1.6 - 12 mm) wide for both interior and exterior tile installations. AccuColor® Plus is a fast setting grout that provides stain and efflorescence resistance for residential and commercial grout applications meeting ANSI A118.7 specifications. It is crack and shrink resistant.