Dual clamp heads and micro-adjustable stops allow perfect alignment. Thin frame profile allows easy closing of drawer while the clamp is still attached, so alignment can be checked. Max drawer side thickness: 25.4mm (1-1/8″). Max drawer front thickness 25.4mm (1-1/8″). Max side overlay 44.4mm (1-3/4″). Required clearance between drawer box and cabinet frame 4.7mm (3/16″). Dual clamp heads and micro-adjustable stops allow perfect alignment. Thin frame profile allows easy closing of drawer while the clamp is still attached, so alignment can be checked. Max drawer side thickness: 25.4mm (1-1/8″). Max drawer front thickness 25.4mm (1-1/8″). Max side overlay 44.4mm (1-3/4″). Required clearance between drawer box and cabinet frame 4.7mm (3/16″).