Construction of the cold frame begins with building three identical frames using decking lumber. (I'll provide dimensions and other details on my blog.) Each corner is connected with three 2 1/2" screws. Each frame is not too heavy to carry, but are stacked to make the completed cold frame.
Portable Cold Frame This cold frame is made in three stackable layers to make it portable. It can hold nine trays of seedlings, and includes a watering system that can be operated by a timer.