| 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 | | |
| 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 | | |
| Digital Humidity Sensor, For Models SP-A50-A390 | $90.00 | | |
