TechBrite’s most popular industrial retrofit kit, the LED Tube Retro Strip, is a simple installation process. It includes all the items to convert an existing strip fixture to a CSA-approved LED tube fixture. Replace your existing T12 or T8 fixtures with the LED Tube Retro Strip from TechBrite. The LED Tube Retro Strip is designed specifically for 4 foot LED tubes up to 22w and is available for 4 or 8 foot fixtures.