SECTION 15820 - DUCT ACCESSORIES
2.2 backdraft dampers 3. 2.3 manual-volume dampers 4. 2.4 motorized volume dampers 4. 2.5 fire dampers 5. 2.6 ceiling fire dampers 5. 2.7 smoke dampers 5. 2.8 duct silencers 6. 2.9 turning vanes … ................
................
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.