Many reciprocating-type pumps are "duplex" (two) or "triplex" (three) cylinder. The building has 35 apartments on its 64 stories including a $130 million triplex penthouse. In 3-to-4-unit ("triplex" to "fourplex") structures&colon; $294,787. In that year he moved into a luxurious 40-room triplex apartment at 740 Park Avenue. Triplex pumps with shorter lifetimes are commonplace to the home user. Triplex pumps now are in a myriad of markets across the world. These included a three-unit building known as the Triplex, built behind the mansion. There are two classes of triplex DNA&colon; intermolecular and intramolecular formations. Drive to the under-mounted gearbox was by triplex chain. There are two different types of intramolecular triplex DNA&colon; H-DNA and H*-DNA. The degree of supercoiling in DNA influences the amount of intramolecular triplex formation that occurs. The triplex, which was refurbished, had its price adjusted down to $57 million in 2016. The primary barrier is made of invar , and secondary from Triplex. PVC/PCTFE and triplex laminates are PVC/PE/PCTFE. Dodson, Jarman and Jensen ship out on the "Aes Triplex".