Window Gallery installed a 9-foot, color-matched sliding door in this family home in Trenton NJ. Upgrade Your Interiors With Doors with Window Gallery in NJ. Pick the right door to reinforce your design scheme and add contrast or depth to the room. Now’s the perfect time to give your entryway a new look. Window Gallery provides you with the best door upgrade in North Bergen. If you are looking to upgrade your entry door, call Us Today.