Setting the industry standard since 1980
As the leading manufacturer of PVC fitting covers and jacketing systems for the insulation industry, Proto Corporation fosters relationships built on trust, quality and a dedication to service.
Innovative Products at Your Fingertips
With hundreds of different options in a large variety of colors and sizes, our products are designed to cover all standard and specialty fittings. We also offer unlimited customization to tailor our products to your needs.
Everything you need to get started
Need specific information on our product line regarding safety, physical properties, or compliance? Our technical resources for contractors, designers, and building owners are your passport to getting the job done.
Customer service comes first
From order to delivery, our knowledgeable, on-site customer service team is always available to help with whatever you need. We also have area sales representatives who provide regional help across the U.S. and beyond.