Made of Ultrex® inside and out, this virtually maintenance free window will stand up to the elements like no other window. Infinity windows can be ordered with Simulated Divided Lites, or with or without Grilles-Between-the-Glass, making the cleaning of this easy tilt window a breeze. The Double Hung is available with a Stone White or EverWood™ interior finish and either a Stone White, Sierra, Bronze or Pebble Gray exterior. Low E II glass with argon gas and screens are both standard on Infinity Double Hung Replacement Windows. The Infinity Double Hung offers an Insert window as well as a Full Frame window option.