We offer 3.500” wide extruded aluminum heatsinks for you to fulfill your unique heat dissipation needs inside your electric devices. HeatsinkUSA is stocked with one of the largest selections of heatsinks of different sizes and models to cater to a variety of industries such as military, medical, auto, and aerospace. We are also a flexible heatsink supplier. Customize the length of the 3.500” wide extruded aluminum heatsinks to match the unique requirements of your electrical systems. In addition, we have no order minimums and offer fast shipping so you get your heatsink profiles quickly and begin production at your convenience.