Undermount Heavy Duty Drawer Slides 38.5cm Full Extension Soft Close Concealed Runners

Industrial heavy duty undermount drawer slides, concealed bottom rail, full extension ball bearing runners Overview Heavy duty undermount drawer slides designed for smooth, quiet operation and stable load bearing. Constructed from cold rolled steel with nylon components, these slides are built for cabinets, wardrobes, bookcases, under stair storage and machine tool drawers where strong support and full access are required. Key benefits Strong load capacity: Stable load bearing up to 100 kg per pair, suitable for heavy items and frequent use. Smooth, quiet operation: Steel ball bearings and a built in silencer reduce noise during opening and closing while providing steady, seamless movement. Full access to contents: 3 fold full extension design lets drawers open fully so users do not need to reach under or behind the cabinet lip to access items. Durable construction: Outer rail thickness about 2.0 mm and inner rail thickness about 1.48 mm, made from tension cold rolled steel plus nylon components for long term reliability. Soft close damping: Damping buffer at the end of travel reduces impact on closing and protects contents and cabinetry. Specifications Product type: Bottom rail, undermount drawer slides Frame material: Cold rolled steel and nylon Outer rail thickness: about 2.0 mm Inner rail thickness: about 1.48 mm Load bearing: 100 kg (stable) Movement: Ball bearing, full extension, 3 fold Damping: Built in silencer for quieter closing and opening Color: Silver Installation: Bottom support; mounting location cabinet or cabinet bottom Sizes available: Length 38.5 cm, 43.5 cm, 48.5 cm, 53.5 cm Unit reference: mm; 1 cm = 0.39 inches Packaging: 1 pair includes upper and lower slides Performance notes Designed to withstand heavy loads and repeated cycles. Each set uses tension steel plates and steel ball bearings for stable sliding under load. A silencer and damping buffer reduce noise and cushion the end of travel for a quieter home environment. Proper mounting clearance must be left under the drawer for undermount installation. Included in package 2 oversized pull out shelf slides 1 pair heavy duty drawer slides, upper and lower components included Typical applications Wardrobe drawers and built in closets requiring strong support and full extension Kitchen or utility cabinets and under stair storage where smooth quiet operation is desired Bookcases, workshop cabinets and machine tool drawers that need durable, load bearing runners Installation tips Use the bottom support mounting method and confirm clearance under the drawer before installation. Select slide length to match drawer depth; shorter slides offer higher load capacity when full extension is not required. Ensure secure attachment to both drawer and cabinet to achieve rated load performance and quiet operation.