Apparatus and methods for assembling together separate components, such as a first substantially flat sheet metal component to a second substantially flat sheet metal component, in substantially perpendicular relationship. A first latch component body may have an elongated displaceable latch member provided on a first edge of the first latch component body that is configured to be received and latchably retained within a latch reception opening of a second latch component body that is of complementary shape and dimensions to receive the displaceable latch member. The displaceable latch member may be displaced to an extended position while inserted within the latch reception opening to extend a first latch extension surface of the displaceable latch member outwardly and away from a second latch extension surface of the displaceable latch member such that the first latch extension surface latchably engages a first latch retention surface of the latch reception opening and such that the second latch extension surface latchably engages a second latch retention surface of the latch reception opening to latch the first latch component body to the second latch component body.