Anyone ever used a heat shield like this??????????

Has anyone ever used one of these heat shield's they are supposed to deflect heat away from the bottom of the bulb and disperse it and let you have your hps/mh slightly lower than normal and a lot cheaper than a cool tube,gonna fit it and will let you know how it goes!

Yep they are a staple round here.
Very good if you have heat probs, keeps that real intense light straight under the bulb spread out more evenly.
Also good if no heat probs, just to get lamps closer to plants

Thanks man,i put it in last night and checked them just now,i am having heat issues and the plants in the middle of the room
all had their leaves riffled up from trying to transpire so quickly,today they are fine and i noticed a 3 degree f reduction in my
flowering room,now to tackle that bastard mr.humidity!!!