Speedi-Products EX-DFRP 04 4-Inch Diameter Round Adjustable Plastic Diffuser, White

Speedi-Products EX-DFRP 06 6-Inch Diameter Round Adjustable Plastic Diffuser, White

Fantech 9800000 RSK-4 Backdraft Damper, 4" Duct

Speedi-Products FD-25R6 04 4-Inch Diameter by 25-Feet Length R6 Insulated Flexible Duct with Metalized Jacket

Hydroplanet Duct Booster exhaust Fan, 4-inch, 100 CFM

6 to 4 Duct Reducer-Ductwork-Heating Duct-Air Duct-Ventilation Fittings

Panasonic FV-10NLF1 WhisperLine 120 CFM In-Line Fan, 4-Inch Duct

VenTech VT DF-4 DF4 Duct Fan, 100 CFM, 4"

iPower GLFANXINLINE4 High CFM Inline Ducting Fan, Hydroponic Air Blower Heat Air Conditioning Vent Exhaust, 4-Inch, 190 CFM; Pre-wired 5-feet UL Listed Power Cord

Speedi-Products EX-EVML 04 4-Inch Diameter Micro Louver Eave Vent, White