After many interior-design upgrades, I've got our place looking good, but I'm stumped by the bifold doors. They're everywhere: some louvered, others solid, all ugly.

Doors are an essential part of any home. Learn about the different types of interior and exterior doors to find the best fit for your home and your style.

Details: JELD-WEN and Reliabilt Interior Bifold Doors manufactured by JELD-WEN, Inc. of Klamath Falls, Ore.; sold at Home Depot, Lowe's and other retailers between February 2011 and March 2012.