Product Name: Good Quality 50 Inch Ventilation Fan Model NO.: YUGE1380 Certification: CSA, RoHS, UR, ISO, UL, CE, CCC Pressure: Low Pressure Flow Direction: Centrifugal Usage: for Experiment, for Manufacture, Ventilation Material: Stainless Steel Thickness: 1.0mm frame: Gavlanized Coated Trademark: yuge Transport Package: in Bulk Specification: 1380*1380*450mm Origin: China HS Code: 8414809090 Product Description Qingzhou Changtai Machinery CO,ltd is a professional manufacture of exhaust fan , cooling pad , feeding silo , feeding line and drinking line.etc.we have a high-quality staff team , products R&D capability strong, rich professional knowledge and products designed to fully meet the needs of our customerswe have trademark BOLIDE is famous in the world .welcome all to my factory for business talk.modeldiameter of bladesair volumepowermotor speedsizevoltagefrequencyYUGE900900mm30000m3/h0.75kw1400r/min1000*1000*450mm380v50hzYUGE10001000mm35000m3/h0.75kw1400r/min1100*1100*450mm380v50hzYUGE12501250mm42000m3/h1.1kw1400r/min1380*1380*450mm380v50hzYUGE14001400mm55800m3/h1.51400r/min1530*1530*450mm380v50hz