The Tube Guard™ Dot Matrix is an economical and innovative product that allows you to control the effective light output from your fluorescent lights. Simply insert the Dot Matrix film around the bulb and inside the Tube Guard™ tube. Then, with a simple twist of the tube, you can soften, dim and direct the light output as needed. The Dot Matrix film can control light output from 0% to 100% using a linear gradient curve. Now you can have more control over the lighting environment with the Tube Guard™ Dot Matrix. Available for T-5, T-8 and T-12 bulbs in 4ft lengths. (Use two for 8ft bulbs.)

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