This was a great replacement for the old Tall Hats in the recently renovated basement. They have been tuned to 5 or 6 inches (preset to 5). Just had to loosen 2 set screws and push out the springs, then tighten the screws, screw in lamp base plugs, install springs and you're done. I used all 6 and it took 15-20 minutes to do everything. I suggest setting the width first on all units if necessary, then they will quickly adjust. They worked great, dimmed beautifully with no noise and were actually brighter than the old bulbs. They come with a 3 year guarantee so I hope they last.
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