This 24-inch extension is constructed of strong tubular steel. Neutral color and simple design matches any home decor. For the use with Model Number G20 Safeway Gate and Model G60 Elongate. For the Safeway Gate, this extension is for use when openings are 43 1/2" to 66". For the Elongate, each extension increases the width in two-foot increments, and a maximum of four 24-inch extensions are recommended to expand the Elongate up to 13 feet.