| Control Damper - VCD-23 10"X10" | $151.00 | | |
| Control Damper - VCD-23 12"X12" | $151.00 | | |
| Control Damper - VCD-23 -36"X24" | $253.00 | | |
| Control Damper - VCD-23 -36"X36" | $359.00 | | |
| Control Damper - VCD-23 8"X8" | $151.00 | | |
| Control Damper Extension Pin Kit - 1/2" Shaft | $59.00 | | |
| Control Switch, Minimum Ventilation, Product # 876265 | $209.00 | | |
| Curb Extension -Vented 18.5"X18.5" | $375.00 | | |
| Curb Extension -Vented 21.5"X21.5" | $300.00 | | |
| Curb Extension -Vented 29.5"X29.5" | $399.00 | | |
| Curb Extension -Vented 33.5"X33.5" | $394.00 | | |
| Damper Tray, Accommodates 10 In Damper installed in Roof Curb Model GPI-17 | $16.00 | | |
| Damper Tray, Accommodates 10 In Damper installed in Roof Curb Model GPI-19 | $19.00 | | |
| Damper Tray, Accommodates 12 In Damper installed in Roof Curb Model GPI-19 | $19.00 | | |
| Damper Tray, Accommodates 12 In Damper installed in Roof Curb Model GPI-22 | $22.00 | | |
| Damper Tray, Accommodates 16 In Damper installed in Roof Curb Model GPI-22 | $22.00 | | |
| Damper Tray, Accommodates 18 In Damper installed in Roof Curb Model GPI-30 | $30.00 | | |
| Damper Tray, Accommodates 24 In Damper installed in Roof Curb Model GPI-34 | $34.00 | | |
| Damper Tray, Accommodates 30 In Damper installed in Roof Curb Model GPI-40 | $40.00 | | |
| Damper Tray, Accommodates 8 In Damper installed in Roof Curb Model GPI-17 | $16.00 | | |
| Damper Tray, Accommodates 8 In Damper installed in Roof Curb Model GPI-19 | $19.00 | | |
| DECV retrofit terminal unit 10" | $315.00 | | |
| DECV retrofit terminal unit 12" | $337.00 | | |
| DECV retrofit terminal unit 14" | $403.00 | | |
| DECV retrofit terminal unit 16" | $432.00 | | |
| DECV retrofit terminal unit 6" | $264.00 | | |
| DECV retrofit terminal unit 8" | $271.00 | | |
| Dehumidistat, 120V/3 Amp, Product # 385364 | $127.00 | | |
| Designer Filter, Model F-200, for use with Model SP A50-A390 and SP B50-B200 | $22.00 | | |
| Designer Grille, for Model SP-C50, Product # 455478 | $32.00 | | |
| DESV Controls Enclosure | $65.00 | | |
| Digital Humidity Sensor, For Models SP-A50-A390 | $90.00 | | |
| Disconnect Switch, NEMA-1, 1 Pole, Single Throw, Up to 1/2HP, 120V, Single Phase | $16.00 | | |
| Disconnect Switch, NEMA-1, 1 Pole, Single Throw, Up to 1HP, 120V, Single Phase | $22.00 | | |
| Disconnect Switch, NEMA-1, 1 Pole, Single Throw, Up to 2HP, 120V, Single Phase | $63.00 | | |
| Disconnect Switch, NEMA-1, 2 Pole, Single Throw, Up to 2HP, 200/277V, Single Phase | $29.00 | | |
