1. Mixing Boxes
a. Outside and Return Air Dampers
b. Access Doors
2. Economizer Systems
a. Filter Rack Installed
3. Filter Mixing Boxes
a. Filter Access Doors
b. Bag Filters, TAW Filters
4. Hail Guards
5. Horizontal Discharge Curbs
a. Plenum Curbs
6. Custom Louvered / Vented
Curbs
7. Curb Caps /
Square to Round Adapters
a. Pipe Curbs