The Contractor shall deliver 400 Series Dual Protection air filter to the U.S. Embassy Ulaanbaatar. This is a firm-fixed price type of purchase order/contract. All prices are in USD. We intend to proc... The Contractor shall deliver 400 Series Dual Protection air filter to the U.S. Embassy Ulaanbaatar. This is a firm-fixed price type of purchase order/contract. All prices are in USD. We intend to procure “Blue Air brand or equivalent quality” air filters that meets the specifications outlined in this RFQ. Smoke stop filter compatible with Blue Air Classic 400 Series with specifications below.