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DL3232 Insulated Air Inlet

Designed with a rough opening to fit standard filter boxes, the DL3232 swine inlet is a great addition to any operation in the swine industry. The DL3232 Insulated Air Inlet has aerodynamic, curved insulated blades that direct attic air along the hog barn ceiling for the most efficient air mixing inlet on the market. Its square design promotes precision air movement during minimum ventilation by using a smaller opening, increasing the nozzle effect and air jet throw of the entering air.

DL3232 Insulated Attic Air Inlet
U.S. PATENT NO. 11,131,478
Part 90302P
CFM: 4,144 cfm @ 0.10 SP
Option 1 Rough Opening: 28″ x 28″ for filter box
Option 2 Rough Opening: 29.75″ x 28.875″

Inlet OD: 32″ x 33″


– Curved blade
– Fully Insulated Inlets
– Plastic Construction
– Comes Fully Assembled in box
– Continuous Blade Hinge


– Curved blade designed to direct air along the ceiling for proper air mixing
– Insulated housing & blades minimize condensation &inlet freeze-up
– Durable plastic construction to withstand power-washing and resist corrosive environments
– Easy installation into ceiling and all mounting hardware is included
– Proven to seal up better than competition, reducing fuel usage and creating minimal leakage
– Fits standard filter boxes in the industry
– Square design promotes more precise minimum ventilation while still providing over 4,000CFM fully open