Since 1971, with over 60, 000 sf of manufacturing area under one roof, T & L Manufacturing has been a quality full service manufacturer, offering many options to a diverse group of industries. For all the latest custom metal fabrication and products from T & L, click on the links below. Welcome to the T&L Manufacturing web site: Fabrication at its Best and Manufacturing Made in the USA We offer custom window well coverings for your home or business. We custom manufacture solid metal covers in standard window well sizes or unique custom window well sizes. Continue to our Custom Window Wells page. We offer custom window well coverings for your home or business. We custom manufacture solid metal covers in standard window well sizes or unique custom window well sizes. Continue to our Custom Window Well Installation page for install directions.