Gutters in Florida typically come in two sizes, 6" and 7". Keep in mind that seamless gutters are fabricated on the job site, with each length of gutter measured on the spot and created from a gutter forming machine that turns flat aluminum into gutters specific to the size of your property. For most applications 6" gutters will work fine in Florida. This is especially true for a slightly pitched roof with shingles or a TPO flat roof system. Where 7" rain gutters make a big difference and might be a must-have is larger tile roofs, steep metal roofs and and any roof with an especially steep slope or pitch. As the 7" seamless gutter machine is more expensive it is also more rare - which is why we own a state of the art, best in class 7" machine along with our 6" machine. 7" gutters are typically 40% more expensive to install than 6" gutters because each piece of the process is considerably more expensive. One example is the hangars or brackets used to secure the gutter to the face of the roof line (the fascia) - 7" brackets are 300% more expensive than 6"brackets. In summary, we have the ability to offer both solutions and our goal is to ensure you get the correct solution for your home. And with the Guttersmith Guarantee, you have piece of mind knowing it will done right.