Tube Guards are an easy and economical choice in areas where lamp breakage and/or U.V. filtration is a concern. They simply slide over your existing bulbs to protect against shattered glass and control the release of toxins. They are required in any area handling food in a commercial environment and recomanded for safety. Using T5 lamps is a cost-effective lighting systems solution for a variety of reasons. Unfortunately the average T5 lamp will dissipate about 73% of its total lamp power as heat. And when this lamp is used in combination with a tube guard, that heat must be properly dissipated from the lamp. Our T5 HD (Heat Dissipation) Series Tube Guard takes into consideration two major factors; the temperature on the inside of the tube guard, and how close the T5 lamp is actually located to the tube guard. Our T5 HD Series Tube Guard’s larger diameter and its “vented” End Caps allow a layer of air to absorb heat from the lamp and cool it before making contact with the inside wall of the tube guard. This results in a 25oF temperature drop.* The larger diameter of the T5 HD Series Tube Guard allows it to accommodate Heat Sink to control and distribute heat, in addition to lowering the temperatures over a larger area on the end of the tube guard.