1 - Aluminum 5" - Inch Gutter Inside Box Miter Color Musket Brown 1 - Aluminum 5" - Inch Gutter Inside Box Miter Color Musket Brown made of Strong Heavy Gauge Aluminum. Used for connecting gutters in a 90-degree corner The miter is joined to the gutter using zip screws. Should be sealed with GEOCEL CONSTRUCTION TRIPOLYMER GUTTER AND NARROW SEAM SEALANT made for the use of aluminum rain gutters. Best not to use with just any brand silicone sealants, as they don?t hold up as well. (you can find this in our other seamless gutter related listings) Accessory for 5 ? Inch K Style Gutters Heavy Gauge aluminum used (not like the material sold online and large box stores) A High-Quality Product Made in the USA. Baked-on factory finish for low maintenance. Accessory for K Style Gutters MITERS Connecting gutters in a corner, coming together Should be sealed with GEOCEL CONSTRUCTION TRIPOLYMER GUTTER AND NARROW SEAM SEALANT Heavy Gauge aluminum used (not like the material sold online and large box stores) Baked-on factory finish for low maintenance A High-Quality Product Made in the USA