Precision. Quality. Innovation. Customizaion.

At 4K Custom Thermoforming, we provide tailored plastic packaging and component solutions designed to meet your exact specifications. From durable trays and clamshells to precision-fit inserts and enclosures, our thermoformed products are engineered for strength, consistency, and efficiency. Whether you need small production runs or high-volume output, we’re equipped to deliver on time and on target.

We offer complete in-house design and tooling services to take your project from concept to production quickly and accurately. Our team works closely with you to create prototypes that can be tested and refined before final approval, ensuring the end product functions exactly as intended. Every mold is built with long-term performance and repeatability in mind.

We serve a broad range of industries where custom plastic solutions are critical to handling, storage, protection, or display. Whether you're packaging parts, organizing inventory, or developing a specialty product, we’ll help you create a thermoformed solution that improves workflow and adds value.

Our facility in Byron Center, just south of Grand Rapids, proudly manufactures every product right here in Michigan. As a small, responsive team, we’re able to offer fast turnaround times, personalized service, and dependable quality on every job.