Senneca Holdings is a diversified management and holding company whose companies are focused on the specialty door industry. ... Senneca oversees the operations of its companies, allocates resources among them, and helps to improve the performance of its operations. Senneca seeks out acquisition opportunities that strengthen our position in a business segment as well as companies that will diversify our portfolio of specialty doors. Senneca combines global scale with operational agility to lead the markets we serve. Recognized for our entrepreneurial approach for over 30 years, our Team of employees worldwide takes pride to provide customers with the best specialty doors to meet your needs. read more