Unified Door Co LLC

Sioux City's only locally owned lumber yard, everything for your building needs. Lechner Lumber Co has been serving clients throughout the Sioux City area for more than 75 years. We are completely locally owned and are dedicated to providing everything for your next building project. Our selection of supplies includes top quality windows and doors. Lechner Lumber Co also does city-wide delivery for local customers. We also accept Visa and MasterCard for your convenience. Call us today for your building supply needs. You can also submit your request and contact us at our website.

Welcome to Burke Engineering Sales. We have been serving the Siouxland since 1952. Our President GR Jerry Gardiner feels the foundation of Burke Engineering has been built on its reputation of excellent customer service and selling quality products at a competitive price.Burke Engineering professional staff can meet your specific needs as well as write hardware and door schedules for your specific projects.We Specialize Inï Hollow metal doors and frames ï Wood doors ï Finish hardware ï Acoustical ceilings ï Access flooring ï Chain link fence Provided Trades, Services, andor Productsï Construction materialsï Acoustical and ceiling workï Access flooring system installationï Fence constructionï Wood and Plastic Laminated Doorsï Finish Hardware - Builders Hardwareï Hollow Metal Doors and FramesSee what a difference it makes when you give Burke Engineering and BTB Limited the opportunity to work with you on your next project.