The AG170-028 Black Matte dishwasher air gap cap is designed to replace the default cap of the AG200-001, AG200-002, and AG200-003 Amerigap dishwasher air gaps. Many homeowners prefer a unifying design in their new or renovated kitchens, right down to the surface accessories. A custom color cap allows for an overall more pleasing aesthetic in the kitchen, while the brass composition provides security and durability for peace of mind.