dear sir, we have a service that will help you to maintain your standard. we are engaged in offering a wide range of air distribution products that include motorized dampers, air diffusers, return air grill,double deflection supply air grill, all types of air filters, linear, turbo ventilator, grill damper, low leakage duct damper and much more. owing to their superior strength and hassle free performance, our products are highly acknowledged in the market. as per the diversified requirements of clients, we provide these products within stipulated time frame and adhere to all the standards in order to achieve quality according to our client's desire. as far as the concern of price, it would be market competitive with good quality. if you need further assistance, don't hesitate to contact us and we are happy to serve you better. thanks & best regards sattar air devices and filters m: 0333-2217145, 03232098378 a: shop # b-22 block 2 mazenine floor al-karam square federal b area, karachi – 76500, pakistan. e: airdevices786@gmail.com