K&L Microwave is a subsidiary of Dover Corporation. K&L is recognized by top-tier defense contractors and wireless infrastructure providers as a world leader in the design and manufacture of RF and microwave filters, duplexers and integrated assemblies. K&L is AS9100 and ISO 14001 certified and offers customers the most extensive range of filter-based products in the industry, spanning from 0.3MHz to 94GHz. K&L began operation over 40 years ago in a 1,400 square foot facility manufacturing custom filters primarily for the military sector. Today, with manufacturing facilities in the United States and the Dominican Republic and a global sales presence, K&L is the industry's premier filter supplier for both military and commercial markets.