Hunter Custom Manufacturing

Who We Are

Hunter Custom Manufacturing is a full service custom manufacturing company. We have 22 machines, a fully equipped onsite domestic tool room, and onsite access to degreed & certified mechanical, design, automation, manufacturing, tooling and chemical engineers. We have maintained consistent growth over our nearly two decades of operation through delivering individualized, quality-focused manufacturing solutions that ensure our customers always get what they need when they need it; and as cost-effectively as possible.

We are also an integrated division of Hunter Industries, one of the largest irrigation manufacturers in the world. Hunter's vast global resources allow us the ability to provide low production costs and complete access to state-of-the-art engineering, tooling, quality and distribution processes. It also provides access to Hunter's complete corporate infrastructure including 1,500 employees worldwide, 450,000 sq. ft. of manufacturing, office, and warehouse space in San Marcos, CA, as well as 250,000+ sq. ft. of manufacturing and assembly. in Tijuana, Mexico.

Our History

Hunter Custom Manufacturing was originally a partnership between two lifelong friends and business partners, Ed Hunter and Glen Grizzle. Ed Hunter was an irrigation engineer who invented and produced a multitude of groundbreaking sprinkler models, and Glen Grizzle was a Tool Maker who worked closely with Ed to help complete his inventions. They began working together at Hunter's Moist-O-Matic irrigation company in the 1960s, and continued working closely for 20 years after Ed sold Moist-O-Matic to Toro Company and began their irrigation division. In 1981 Ed opened Hunter Industries.

As Hunter Industries expanded globally, Ed being a visionary saw an opportunity to help Glen start his own business in custom molding using his tooling and molding expertise and Grizzle and Hunter Plastic was born. The result has been nearly two decades of consistent growth, progressive innovation, and repeatedly satisfied customers. Industries served: Medical Device, Industrial Consumer Products, Automotive, Water Management, Industrial Controls. Expected AS9100 Certification by Q4 2016 for Aerospace Industry.

Hunter Custom Manufacturing Facility

We specialize in a variety of Engineered Resins while servicing many Industries

Consistent Processes start with Scientific Molding processes.

Our values and culture

Our mission is to become our clients' long term manufacturing partners by delivering innovative molding and production services of the highest quality and dollar for dollar value. Our core values are customer satisfaction, innovation, family, and social responsibility. We intend to uphold these values at all times, and instill them in everything we do both internally and externally to ensure a positive environment for our employees, and an outstanding experience for our customers.

We are dedicated to achieving the highest level of customer satisfaction from our professional customers to end-users. We will be responsible for the decisions we make, respectful in every client, vendor, and internal contact, and we will fulfill every single one of our commitments. All employees will treat one another with the same concern, respect, and care that they are expected to show customers.

Achieving our mission while upholding these values makes us proud to be a part of Hunter Industries.

About Hunter Industries

Hunter Building, Hunter Custom Manufacturing

Hunter Industries is the parent company of Hunter Custom Manufacturing. Family owned and operated since 1981, Hunter Industries is one of the world's leading manufacturers of irrigation equipment for the landscape, golf, and sports turf industries. From all kinds of sprinklers, to drip irrigation, to controllers, sensors, valves and central controls, Hunter produces a complete spectrum of water-efficient products for commercial and residential applications.

Known as the irrigation industry's innovation leader, Hunter Industries now has more than 250 product patents, 40 trademarks, 1,500 employees, sales in 140 countries, and strategic partners on every corner of the globe. Hunter Industries' vast manufacturing infrastructure makes it the perfect partner for Hunter Custom Manufacturing to share resources, insight, and facilities.

For more information on Hunter Industries, please visit their website at