This colonial baseboard is a popular and a classic profile. Hardwood and softwood species come in 5-1/4 height and MDF is 5-1/2 inch high. Baseboard ties the wall and floor together offering a visual foundation. It protects the walls from bumps and cleaning. The baseboard should compliment the style of casing and should be thinner and wider than the casing. Shoe mould often accompanies the baseboard if the floor is uneven or there is gaps between the baseboard and the flooring.