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 window a breeze. The Bow window 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 is standard on Infinity Bow Replacement Windows. Infinity Bows offer Insert windows as well as Full Frame window options.