In this section, we try to give you a feel of the many sections that make up your duct system. These components are found in the attic or crawl space that make up your air distribution system. Flexible Air Duct Hart & Cooley F216 R6 Boxed 25' Hart & Cooley Flexible Duct Black Vinyl 25' Boxed F314 Metal Tab Collars Sherer Manufacturing Metal Glass Top Boots Return Air Boxes R6 Let us help you through the selection process. Value ac is a proud distributor of Hart and cooley registers, air diffusers, vent covers, and air conditioning vents. We can special order anything you need. Please call us at 1-888-242-7725 Toll Free for a quote. We want to earn your trust! Floor Registers and Vent Covers Blog