Application:Mall, Air Conditioning Ventilation System
Place of Origin:Guangdong, China
Item name:Gravity louver
Installation:Door/Wall Mounted Installation
Accessories:Insulated foam available
Gravity Air Louver:
VENTECH gravity louver is with white powder coating. It can be accurately adjusted for smooth performance. Only when the exhaust fan is running that the blades of this air louver can be opened. The blades will close automatically to preventing dust,insects,birds,rain from getting inside rooms, once the exhaust fan is turned off.
It applies to air conditioning room with positive pressure. It exhausts air automatically. Usually the blade is vertical, it isolates the air circulation between indoor and outdoor. When the indoor pressure is bigger than the outdoor pressure, the air flow blows the blade and the inside air is exhausted. The air isn’t able to flow into room if the indoor pressure is smaller than outdoor pressure. It has single-track non-return function. Air volume damper that adjust air volume and air speed or filter that decrease dust and purify air can be set up in the back of air outlet according to customer’s requests.
We use high quality extruded aluminum to produce the gravity louver which is usually used on the outside of walls. This aluminum louver design is intended for air extraction and automatic closet of duct, when the air equipment is switched off.
GL-VA gravity louver has been anodized. It can be accurately adjusted for smooth performance. Optional colors are RAL9010 and RAL9016. Only when the exhaust fan is running that the blades of this type air louver can be opened. The blades will close automatically to preventing rains , dust, insects from getting inside rooms, one the exhaust fan is turned off.
Made of high quality extruded aluminium profile.
It is used for air extraction and automatic close of duct when the air equipment is switched off.
RAL 9010 / RAL 9016/ Anodized
They are used for air extraction and automatic closing of duct when the fan is switched off.
They consist of a frame and movable plates mounted horizontally one above the other.
Standard Size H*L (mm)
Effective Area (m2)
Air Volume (m3/h)
10 pcs/ctn or 5 pcs/ctn, LCL in standard export pallets,FCL in 20GP,40GP,40HQ.
*Neutral packing: export standard carton. *Unit packing: heat-shrink film packing for each product, plastic protect corner is optional. *All of the productions are inspected carefully by QC before delivery.
Delivery Time: *Normally 30 days production time after receiving the deposit. *Urgent orders could be on priority. Min. Order *If order based on EXW terms, no MOQ is required. *If order based on FOB or CNF or CIF terms, there’s MOQ for your options. *Container orders will have more favorable price.
Q: Are you a manufacturer? A: Yes, we are a professional manufacturer, and we have more than 15 years manufacturing and overseas sales experiences. Now we've sold our HVAC system air supply return ceiling diffuser to more than 50 countries!!!
Q: What's the MOQ? A: The MOQ is 5000usd per order. Mixed supply ceiling diffuser is allowed.
Q: Can you provide free sample? A: Yes, we could provide free sample of supply ceiling diffuser. But we don't pay for the delivery cost.
Q: What's the delivery time? A: the delivery time is about 30days.
Q: what's the payment term? A: T/T, L/C
Q: Can we buy under our own logo? A: No problem.
Q: What is the quality? A: we offer high quality products. VENTECH is famous for it's high quality and most competitive price!
Q: Can I be a VENTECH brand distributor? A: Yes, you can. Pls contact us for more details.
What Ventech has been taken into serious consideration is the quality of air units. It can be installed on the wall or the ceiling.
The product quality of Yingde Ventech Air Conditioning Co.,Ltd has been universally recognized. It can be installed on the wall or the ceiling.