Parent Company

Exeter Architectural Products was founded by the principals of Diamond Manufacturing Company - North America's Leading and Largest Perforator.

When it comes to perforated metal, plastic, and other materials, Diamond Manufacturing has the experience and the resources to satisfy practically every requirement. Since 1915, Diamond Manufacturing has been providing original equipment manufacturers (OEM's), job shops, and architectural firms with quality perforated material.

To satisfy the varying needs of different customer types, Diamond has to be very versatile. For this reason, Diamond invests in tooling and machinery that can perforate more than 2000 patterns, produce materials in tolerances tighter than industry standards, and offer it as sheet, coil, tube, fabricated, or finished product. With these abilities, Diamond Manufacturing Company is capable of satisfying a wide range of requirements.