Caldwell

18" Raised Y Fan Transition with Angle Ring Flange

18" raised Y fan transition with an angle ring flange, sized for larger fans and ducting. It raises and splits the airflow into a Y, with the angle ring flange giving you a tight, dependable seal.

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...

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" 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" 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.

Caldwell Roof Exhaust Fan

Caldwell roof exhaust fans pull warm, moist air out the top of the bin to keep your aeration working the way it should. Four options to choose from:0.5 HP single phase, 18" diameter, 4,000 CFM,...

Corrugated-Perforated 18 Guage Floor Sheet (20" x 45")

Corrugated, perforated 18-gauge floor sheet for flush-floor aeration systems. The perforations let air flow up into the grain while the corrugated profile carries the load. Sheets measure 20" x 45".

Corrugated-Solid 18 Guage Floor Sheet (20" x 45")

Corrugated, solid 18-gauge floor sheet measuring 20" x 45", for the areas of your flush-floor system where you don't want airflow. The corrugated profile keeps it strong underfoot.

Flush floor Concrete Form

Flush-floor concrete form for pouring the foundation channels of your flush-floor aeration system. It shapes the concrete so your ducting and floor sit right when the pour cures.

Solid End Plate

Solid end plate to close off the end of your flush-floor aeration channel. Keeps grain out and directs airflow back into the system where it belongs.

Y Fan Transition

Y fan transition for connecting your fan to a Y aeration setup. It mates the fan outlet to the ducting so air moves smoothly into the system with no awkward gaps.