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Well it looks great, and then yes, one runs into the problem of actually using it for its original purpose. Now you'll need to protect it with cardboard or something each time! Have same problem...

You would find it well worth your time and money to find the most recent test of these done by Consumer Reports. MAJOR differences in the abilities and prices. A $99 Sears beat out several that cost $250+. Not that it was the best there was, either. But price and brand had nothing to do with...

It depends on the temperature and the humidity of the air above the slab. Hot and (relatively) dry air won't condense. Cold and wet won't either. Hot and wet will. However, running just a de-humidifier would be cheaper than running an a/c compressor. Of course you're also paying something...

Agreed on the bad photography. But here are links to each photo and description: http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200304225_200304225 http://www.gearwrench.com/catalog/extensions_and_adapters/locking_extensions/setdetails.jsp?part=81302

I agree. You have to go into HF, or anyplace, really, with an idea of what is important to you. And what is important is probably different for different items. For me, the criteria would be: Utility, how well will it perform its function. Longevity, how long will it perform at an...

It's trick photography! :) They are both 3, 5, and 10 inch sets. If the Gearwrench set is packaged so that I can remove the extensions without destroying it, I'll compare them and report on them.

I disagree. Assuming the compressor is able to maintain the output, the velocity will increase through the restriction(s) to match the flow on the upstream side of the restriction.

Well, for $13, I took a chance and ordered 'em. When they come I'll take one down to Sears and compare it to the Gearwrench. The lowest SK price I found was about twice the Gearwrench which is already more than twice the Northern. These are low stress and low tolerance items; can't see why to...

Is there a difference between the Northern 1/2" extension set for $13 and the GearWrench for $37? If so, what would it be?

Radiant heat works by radiation, not convection or conduction. Imagine walking outside on a calm day with a clear sky. It is 50 degrees (F). Walk in the shade and you will feel cool. Turn the corner into the sun and you will instantly feel much warmer. The air is 50 degrees either way. In a...