This Elation Pixel Bar 40 LED fixture comes with a Flat Frost Tube Lens, but no C-clamp. Note that there's a visible crack in the middle of the tube lens.

To use this Elation Pixel Bar 40 LED fixture, first make sure it's in a safe and stable location. Since it doesn't come with a C - clamp, you'll need to find your own way to secure it if necessary. When turning it on, follow the standard electrical safety procedures. Be aware that there is a crack in the middle of the tube lens, which might affect the light distribution a bit. For maintenance, keep it clean by gently wiping it with a soft, dry cloth. Avoid using harsh chemicals as they could damage the fixture. If you notice any further issues, it's best to contact a professional.