http://www.recessedlightinglayout.com/ First, some terms: A Watt is the amount of power consumed by a bulb per hour Lumens are a raw measure of light output Kelvin is color temperature – 2,700K (indoor soft white) to 5,600K is bright white like a fluorescent. this paper might solve our cutting stock problem: http://ac.els-cdn.com/0377221793E02775/1-s2.0-0377221793E02775-main.pdf?_tid=c30e007a-43ec-11e6-a368-00000aab0f27&acdnat=1467859664_ff7d7101ac220ca7831f48410693a63c http://www.homedepot.com/catalog/productImages/400/29/297fa046-d7f9-405b-b52d-107b4c115a3f_400.jpg these lights: http://www.homedepot.com/p/Halo-5-in-and-6-in-3000K-Matte-White-Recessed-LED-Retrofit-Baffle-Trim-Module-80-CRI-RL560WH-R/203310667 … Read more