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The best way to get the most from your standard Hydrofarm reflector unit is to use this kit along with 4" aluminum dryer ducting (sold separately) to exhaust heat and cool your growing are in warm climates or, in cool winter conditions, to recirculate warm air for heating. You can also use vent covers to block unused ports. This method can be used for a single stand-alone light to simply exhaust warm air.
Two (2) exhaust/fan flanges
One (1) vent cover
Three (3) mounting screw packs
One (1) 20" self-adhesive weatherstrip (for your existing reflector lens)
Fits Daystar™ model DAUN
Fits Radiant model RDUN ballast enclosure
Fits Xtrasun® model XT1AC
Fits Sunburst models
Fits Powerhouse™ ballasts
Fits most Super Grow Wing rear & top vents (newer models; excludes outward formed louvers)
Note: Ducting and fan sold separately. Does not fit Dayton brand fans.