FLEXSOLAR residential flexible solar panel set--1,435 watts

7 x 205w flexible panels. Includes GE silicone sealant and silicone washer on 1.75" quick tap screw. No contractor needed! Each panel weighs only 9.9 lbs. Connect directly to your roof with the screws provided!  Recommended for asphalt shingle roofs with 4/12 pitch (4 inch drop to 12 inch horizontal measurement).  Panels come with a 5-year buy-and-try guarantee from Airspool (get all of your money back if you're not happy, including shipping), and 10-year material and workmanship warranty with TUV-certified FFC coating to make them impervious to the elements.  Size is 42.6 x 43.5 x 0.1 in. Operating temperature range from -40°F to 185°F. 49.2 Voc (open-circuit voltage, so 7 x 49.2 = 344.4v, within the operating range for Airspool units).  19.3% efficiency. IP65 waterproof panels/IP68 waterproof junction box. Note:  We have installed many sets of these on an asphalt shingle roof with 4/12 pitch.  We provide you with screws with a silicone washer and silicone for sealing the screw hole.  So, under these circumstances, based on our experience, your roof will not leak from installing these.  However, do not try this on a flat or almost-flat roof!  If you have standing water, it'll find its way in over time, so make sure you have pitch and make sure you have standard plywood roofing under your shingles.  Although we're doing everything we can to make sure you don't have problems, we can't guarantee that you won't have leaks even if you follow this procedure.