This is a common method of constructing cabinet doors and these are often referred to as a five piece door. In larger panels it is common to divide the panel into one or more sections. To house the extra panels, dividing pieces known as mid rails and mid stiles or muntins are added to the frame.
Bring water to just below a boil. Add eggs to steamer insert and steam for 15 minutes. Immediately transfer eggs to a bowl of ice water until cool enough to handle. Make a small crack on the large end of each egg and place eggs back into the ice water for about 20 minutes. Peel.
Cut the head of cabbage in half, and then cut the two halves in half to make four wedges if your recipe calls for wedges. Add the cabbage to your steamer basket and place a lid on top to hold the steam inside. Steam for five to eight minutes for shredded cabbage and 10 to 12 minutes for wedges. Remove the pot and steamer basket from the heat, and remove the cabbage from the basket with tongs.