Construction: * Ø Frame: High quality extruded aluminum alloy(A6063) profile with 30mm flange as standard. * Ø Blades: Aerofoil blades in 45° from aluminum profile * Ø Blades spacing: 35mm as standard * Ø Support pipe: 8mm diameter aluminum pipeDescription: * Ø Fresh air louver is composed of frame and horizontal blades assembly, manufactured from high quality extruded aluminum profile construction with advantages of corrosion resistance and rigidity. * Ø Blades are set at angle of 45° with 30mm spacing, and fixed to the inner frame by rivets and support pipe. * Ø Total structure is weather proofed and blades are inclined down wards to protect against rain water. * Ø Structure provides around 45% effective pressure area .

Henan Retop Industry Co., Ltd. is the leading manufacturer of aluminum profiles in China for the construction, decoration and industries fields. Since 2003 of our establishment in Zheng-zhou City, We have passed the SGS ISO 9001:2008/9001:2015/140001:2004 certification,we have supplied domestic and abroad market with high-quality products and best service for over 18 years.

Q1：Are you a factory or trading company? A: we're a self -own factory, with export license.Q2：Location? How can I visit there? A: Our factory locates in Zhengzhou, Henan, China. The nearest airport is Xinzheng airport.Q3：Lead time for new molds &mass production? A: 7-10 days to build the new moulds. Mass production takes 20-25days for a 20gp,25-30days for a 40hq.Q4：What certification do you have? A: we are certificated by ISO 9001:2008, factory is reliable and quality is guaranteed.Q5：Payment terms? A: Telegraphic Transfer (T/T) and Letter of Credit (L/C).Q6：Can you send me samples? A: Yes, Free samples, with freight is on your side.