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</o:shapelayout></xml><![endif]--></head><body lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hi all,<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">I am looking into replacing two long-serving halogen floodlights on the exterior of my shop with LED units. I could use some help from the group in understanding what choices provide an apples-to-apples replacement (or better), in terms of overall brightness and similar coverage.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">The existing units are Heath/Zenith Model SL-5525. A picture of one of them is attached, as are pictures of a couple of pages of the installation instructions (yes, I saved them from nearly 20 years ago!). These units each use a single 250-Watt T3 bulb, which the Interwebz claims provide 4000 lumens. The lights are mounted approximately 15 feet above ground and shine onto a bare concrete driveway.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">As you can see, these units have both motion and light sensors, the functionality of which I intend to carry forward into any LED replacements being considered. In addition, I do not wish to remove or replace the existing electrical box extensions mounted on the shop exterior. The wood is clear cedar and I don’t want to deal with fading or differing hole sizes. I realize that this constrains my replacement choices a fair amount, since (it appears) relatively-few LED lights use a standard round mounting plate. The mounting location under the eave also restricts the size of any replacement fixture. (Some high-lumen LEDs that I have found are quite large in size.)<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">With help from an electrical and lighting supplier near me, one candidate (the only one so far) is made by OLF. A spec sheet is attached. As you can see, the manufacturer claims that the two LED heads provide a total of 2160 lumens. The lighting supplier said that, due to the directionality of LEDs, 1/2 the number of lumens are needed for equivalent brightness to halogen.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">So, group – any comments or recommendations would be most helpful. Do you agree with the “LEDs can have 50% fewer lumens” claim? Any knowledge or experience about the coverage (“cone”) of a single halogen vs. 2 LEDs at ~15 feet height? Anything else I should consider?<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Thanks,<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">--Kent<o:p></o:p></span></p></div></body></html>