OCC, Inc. Is a 30 year old, Family owned business that specializes in the manufacture of custom made replacement windows, doors and interior composite shutters. OCC, Inc. Holds 3 patents on specific features and energy compliancy. Our shutters are uniquely designed for longevity, ease of use and beautification.  There is no other shutter that has the look or features that ours offers. If you want a shutter that is affordable, American made and cannot be competitively shopped and has a guaranteed high profit margin then the OCC Shutter is the one you want!