First, tell me you wanna do somethjng cheap, or go First Class, and protect the whole House, and everything in it?
Remember, EVERYTHING that has a Clock Display, or "Instant-On" circuitry, like Microwave, TVs, Cable Boxes, Video Amplifiers, etc...will DIE if Spiked by EMP, CME, or just the Dairy or Processing plant down the road trips a big motor off-line, or whatever.