Usually ceilings are not insulated but if you do have insulation between your main floor and the basement for sound proofing purposes then no these lights cannot be used. Hope this helps.

Yes, these pot lights can be used in an outside soffit as long as they are not exposed to water or insulation. I hope this helps.

The required hole size is no more than 3-1/8". I hope this helps.

Please refer to the attached images for the instruction manual; if you still need assistance with installation please phone 1-800-345-0542. I hope this helps.

No additional hardware is required for installing this fixture. Please visit http://diy.homedepot.ca/diy/project... to take a look at our DIY project on installing recessed lights. I hope this helps.

It is recommended for a drop down ceiling to use hanger bars will can be attached to the t-bar grid. If you still have questions on this you can phone tech support at 1-800-345-0542. I hope this helps.

Absolutely! I have mine on a dimmer switch, with no issues.

It took me a trip to the store to figure it out, but it's actually quite simple. It's a simple process, but I'll explain it step by step in gruesome detail.

i.) This is the trick. Separate the nickel-coloured trim from the white-metal base. It might be a bit tight the first time you do this. Note that you are removing EVERYTHING that is nickel coloured, not just the outer ring. Both the outer ring AND the inner ring that pivots are a single piece. This nickel portion fits snugly into the white metal portion.

ii.) Pull the nickel trim and attached light bulb down.

iii.) Locate the white ceramic ballast white has two wires going into it. Grasp the ballast with one hand, and use your other hand to grasp the bulb, push in slightly (a couple of mm), and then twist 30 degrees counter clockwise. The bulb and trim will pull off the fixture entirely.

iv.) Pull the bulb out of the trim. It is held in by a horseshoe-shaped piece of metal, but it's pretty easy to get out with some wiggling.

v.) Attach a new 50W 120V GU10 bulb to the nickel trim using the the horseshoe clip.

vi.) Plug the bulb into the ballast by pressing in and turning clockwise 30 degrees.

vii.) Push the nickel trim firmly into the white metal base, and you're done!

There is no way to solve this problem. I've used these twice - about 5 years apart. Home Depot changed the clips over a 5-year period but the new clips are no better than the original ones. The problem with these fixtures is that there are only two remodel clips and not three. See my review submitted May 22, 2011 for more details.

The clips are useless. These pot lights are very poorly designed. See my review submitted on May 22, 2011. I do not recommend using them at all.