With all the available products on the market today why settle for a product that constantly requires add ons and tweaks to make there products work. As a previous installer of this product we constantly have call backs for repairs. THV has to send out a rep to explain what kind of add on or fix we need to add because of the poor design of the product. The 50 year warranty does not mean much when you are constantly adding "earrings on a pig." Make the right decision and find a different company with a quality well designed product.
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