David, the law should have been written to encourage the purchase of the most efficient lighting, (IE they get the credit for now many watts the lights save, instead of the bassakwards law they wrote where you add up the watts of the non-incandescent lights you bought and gets a "Credit for that"----so that encourages people to buy those non-incandescants (at the highest wattage), so they can use an incandescent (as computed by our idiots)! If you live in Calif, there is NO WAY, you can miss all the windmills out here, and there are credits (US & Calif), I believe for purchasing Solar Power. Let me give you another example of why I call these "So Called Thinkers", idiots. My wife works for a huge company, with TONS of computers. Just about all the computers are still using Cathode Ray Tube Monitors (There not nearly as efficient as LCD Monitors). There is NO incentive for companies to update monitors (Government wise--Especially CAlif Govt). In fact , you are penalized if you update the monitor, first the sales tax, but worse than that is a law our "Idjusts" passed---The so called "Monitor Recycling Fee". If you are a business, in Calif, You have to "Guesstimate" the number of monitors you will buy in the calendar year. Then you pay a Fee based upon your number (of course they Keep an Eye on ya). This law was passed when (due to the Terminator), no new taxes would be passed in Calif---or at least it would be difficult "Political wise" So the Legislature came up with all kinds of "Fees", this being one of them. They kept coming up with new fees until the "Hammer Fell". Monitor's that are recycled, make money for the recycler so it had nothing to do with the disposal costs of old monitors! One of the many reasons the State is Broke, is because we duplicate so much of what the Fed Govt is already doing, and I for one, don't Appreciate Our Idiots "Granstanding" and passing laws that have the opposite effect of maximizing Energy Savings!!! Gary

A normal can light has a recessed housing and a bulb (e.g. PAR38, A19, BR30..) inside. This style is used in large rooms with flat ceilings where normal flush mounts do not provide sufficient lighting to the outer perimeter of the room (where seating - sofas, ...) are placed. The example you provided is a recent development made possible by leds. The material cost could be less than that for a regular can light housing since junction boxes can be used. The dimming performance (applies to all led lighting) depends very much on the vendor's design and component selection.

Rantontoo, Each manufacturer should list this information for their product. It is usually in the specifications for the lights. I am just using Contrast lighting as an example. They listed it as Specification on the particular fixture. Light spread information: See page 5 and the table named light cone describes how the light spreads at different heights based on the fixture. Something similar should be available for your lighting manufacturer. Good luck!

PAR and BR are nonsensical wrt LED light bulbs. All that is referring to is the old-style reflector light bulbs they are to be a direct replacement for. LEDs don't use reflectors. They are direct emitting light sources. PAR is a parabolic reflector light bulb, BR is a hybridized R, or general reflector style which was supposed to emulate PAR without being PAR. It only matters if the light fixture you have was specifically designed to fit one bulb style more efficiently than the other, such as where the face of the the light bulb fits within a recessed fixture, or if the cavity was shaped to fit a certain bulb style, for example. Joe