www.pmmag.com/articles/88152-selkirk-direct-vent-system
Selkirk Direct Vent System
September 1, 2005

Selkirk's Direct-TempĀ® direct vent system MetalbestosĀ® now includes the 5-inch by 8-inch size, co-linear products and conversion kits. For use with fireplaces, high output stoves, chimneys and direct vent appliances.
Circle 44