The G4110 is a 12.5" extension that can be used with the Gateway pressure mount gate. Please see the guide below to find out how many extensions you will need based on the width of your opening. There is overlap in the measurements to account for uneven surfaces.

• 31.5" - 37" Included with gate
• 37" - 42.5" 1-G4100
• 42.5" - 47.5" 2-G4100
• 47.5" - 49.5" 1-G4110
• 49.5" - 55" 1-G4110 + 1-G4100
• 55" - 62" 2-G4110
• 62" - 68" 2-G4110 + 1-G4100
• 68" - 73.5" 2-G4110 + 2-G4100