Air Diffuser with Four-way Aluminum Alloy Installation and Duct-pipe to Guide Wind Regular Material: aluminum alloy makes strong Four way to guide wind regular Installation from roof Save more duct and cost Size: 930 x 365mm Product origin: China Certification: ISO 9001 Minimum order: 1 x 20-feet FCL Other price terms: EXW, FOB, CIF and CFR Supply ability: 10,000 pieces/month Delivery lead time: 15 days after received payment