Telescoping Outer Cover for 5 frame nuc. Fits standard 5 frame nuc boxes and is fully assembled.
Outer cover is designed to move back and forth, allowing you to create an upper entrance when paired with an inner cover. When the outer cover is pulled out on the side of the inner cover's notch, an entrance is formed. When the outer cover is pushed back so it sits flush against the inner cover notch, the entrance is closed. Since there is no notch on the other side, bees will not be able to enter from the other side.