Protect your investment with our new Extended Limited Warranty available for select Good-Lite products listed below. Available in a three or five-year plan, the Limited Warranty covers any defects in material or workmanship under normal use during the warranty period. During this period, the Good-Lite Co. will repair or replace, at no charge, products or parts of a product that proves defective because of improper material or workmanship, under normal use and maintenance.