4 Inch
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GrowBright 4 Inch Duct Filter Insert
$0.80
Hydrofarm ActiveAir 95 Outflow Flange - 4 Inch
$8.51
Heavy-Duty Square Pots - 4 Inch
$5.50
4 Inch Flexible Ducting
$6.95 – $11.95
Worm-Gear Ring Clamps
$1.99 – $5.00
GrowBright 4 Inch Duct Filter
$4.48
Universal 4 Inch Cooling Flange
$5.95
Duct Muffler 4 Inch
$40.51
Hydrofarm ActiveAir 465 Outflow Flange - 4 Inch
$9.61
Hydrofarm ActiveAir 265 Outflow Flange - 4 Inch
$9.95
4 Inch Duct Wye Fitting
$15.78
Duct Reducer 8 Inch to 4 Inch
$10.26
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