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High Performance Calibrated Door Fans Retrotec’s calibrated fans offer the ideal combination of quality, performance and durability. Retrotec fans are the industry’s first choice for professional blower door systems when it comes to enclosure integrity testing, energy efficiency testing and fire enclosure testing.  | 2200 Series Calibrated Fans (High Performance) The 2200-Series fans are designed for testing any residential house or enclosure from 9 ft2 (0.8 m2) of leakage down to tight houses and small enclosures with 15 in2 (97 cm2). Equipped with a .75hp motor, this fan can achieve up to 6300 CFM and is useful for testing residential and mid-size commercial buildings. Click Here to View Product Details |  | 3300 Series Calibrated Fans (Ultra High Performance) Retrotec 3300-Series fans are designed for testing any residential house or enclosure from 12 ft2 (0.8 m2) of leakage down to tight houses and small enclosures with 15 in2 (97 cm2). Equipped with a 2hp fan capable of up to 8100 CFM, this fan can be used in systems designed for testing the largest commercial buildings. Click Here to View Product Details |
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