18" Round Duct Components and Accessories

18" 4 Way Cross

18" four-way cross to send aeration airflow out in four directions from one point. The right fitting for even coverage under a big bin with larger ducting.

18" Y-Box

18" Y-box for branching a single aeration run into two directions. Great for spreading airflow across a larger bin floor with bigger ducting.

18" Perforated End Cap (Canola)

18" perforated end cap with canola-sized perforations, so air keeps flowing into the grain right to the end of the run. Looking for cereal-grain perforations? Give the office a call.

18" Solid End Cap

18" solid end cap to close off a solid aeration duct run. Seals the end of the line so grain stays out and your airflow stays in the duct.

18" Reinforcement Ring

18" reinforcement rings keep your larger ducting round and rigid under load. New ducts need three rings per 4-foot section — and for the 18" duct you'll want one of each color. Order accordingly.

18" Perforated Duct - 4' Long - 20 Guage - Interlocking Seam (Canola)

18" perforated aeration duct, 4 feet long, in 20-gauge steel with an interlocking seam. The perforations are sized for canola. Need cereal-grain perforations instead? Just call the office and we'll...

18" Solid Duct - 4' long - 22 Guage - Interlocking Seam

18" solid aeration duct, 4 feet long, in heavy 22-gauge steel with an interlocking seam. The larger diameter carries more air for bigger fans and deeper grain, with no perforations so the air goes...

18" Flanged Wall Inlet Adaptor (Slips into 18" Fan)

18" flanged wall inlet adaptor, sized to slip into an 18" fan. Mounts through the bin wall and ties your fan into the aeration ducting with a tight, finished connection.