The GX1 gap filler is meant to fill the gap that might get too big for small dogs, if the gate is fully extended.  It is usable for both the Doorway and Hallway Pets Stop pressure mounted gates. 

Dimensions:
32'' Tall x 2 1/2'' W

NOTE: This item does NOT increase the max width of the gate, but DOES increase the minimum of the Doorway gate to 30 1/2'' and a minimum of the Hallway gate to 36 1/2''.