The Chamberlain garage door opener replacement safety sensors (2-Pack) help make sure your garage remains safe. The sensors project an invisible light beam across the inside of the garage door to ensure that if anything is coming in or going out, that the door automatically reverses before hitting anything or anyone. 1  Replaces defective or damaged sensors.
A traditional triangular prism is a solid figure which is made up of two triangular bases and three rectangular faces. The two triangular bases face each other and are joined together with the help of three rectangles. Triangular prism is the most useful prism in geometry as well as in optical physics.
A prism is a three-dimensional figure with two parallel congruent faces, called bases, and lateral faces in the shape of parallelograms. Prisms are named according to the shape of their bases. Right Hexagonal Prism. Rectangular prism. A prism whose bases and lateral faces are rectangles.