Abstract: A mountable, attachment unit which includes a first plate member adapted to be anchored or positively mounted to a dashboard or suitable surface of a vehicle or the like having a first, permanently arranged capturing lip thereon to receive and hold one portion of a mounting bracket of an accessory unit such as a CB radio or the like therein and a second, spring loaded lip element, slideable and in reverse position to the permanent lip to capture an opposite side of the bracket of the unit to be mounted therein with the spring pressure between such lips provided to positively hold the accessory unit between the permanent and movable lip portions.