Brooks F. Sherman

Integrated Security Systems, Inc. is a technology company that provides products and services for homeland security needs. It also designs, develops and markets safety equipment and security software to the commercial, industrial and governmental markets. The company's Intelli-Site provides users with a software solution that integrates existing subsystems from multiple vendors. Intelli-Site features a user-defined graphics interface that controls various security devices within one or multiple facilities. It provides anti-terrorist barriers, traffic control and safety systems within the road and bridge and perimeter security gate industries. The company also designs, manufactures and distributes warning gates, lane changers, airport and navigational lighting and perimeter security gates and operators. It conducts design, development, manufacturing and distribution activities, through three wholly owned subsidiaries, B&B ARMR, Intelli-Site, Inc., and DoorTek Corp. The company was founded in December 1991 and is headquartered in Carrollton, TX.

Selkirk Americas LP manufactures chimney and venting products. It offers gas-fired unit heaters, gas-fired duct furnaces, steam/hot water units and infra-red heaters. The company was founded in 2006 and is headquartered in Richardson, TX

Selkirk LLC manufactures registers, grilles, diffusers, chimney, and gas venting product lines. The company was founded in 1925 and is headquartered in Richardson, TX.