All drawer slides offered in any of our cabinet lines are full extension. The City Cabinets line uses the Blum TANDEM Plus BLUMOTION 563H slides, while the Barker Cabinets line uses the newer, upgraded Blum Movento slides. Both are excellent and have a similar feel in use, but the Movento system offers a higher weight capacity at 125 lbs compared to the Tandem’s 100 lbs.