Newmark Grubb Knight Frank (NGKF) has completed three sales totaling $8.4 million. In the first deal, NGKF sold 271 Merritt Ave., Wyandanch for $1.4 million. The property consists of three buildings totaling 20,000 s/f on 3.7 acres. The buyer was Island Container and the seller was AmeriGas. Island Container will use this as an additional location to their existing 100,000 s/f. They employ 100 people. The sellers were represented by Metro Realty. Ralph Perna, executive managing director of NGKF represented the buyer. In the second deal, 18 acres on South Researchway in Central Islip was sold to Invagen, who will building two separate buildings consisting of 300,000 s/f. Invagen manufactures generic pharmaceuticals, and will employ 400 people. The sale price was $3.5 million. Prudential represented the sellers, the Town of Islip. Perna represented the buyer. In the last deal, A B H Natures purchased 131 Heartland Blvd., Edgewood, a 35,000 s/f building, for $3.5 million. A B H manufactures vitamin supplements. They will employ 65 people. Perna represented the buyer. Bob Polito and Jack O'Connor, also of NGKF, represented the seller.