Maximum load capacity 220kg, service life 30 years.Installation clearance: single 19.5mm 0.3.The three-section guardrail is made of Q235 steel plate 2.5mm thick and made of high strength and high density cold rolled steel. It can withstand heavy storage without deformation. Equipped with a rubber mat with an ABS plastic bottom, it has good wear and impact resistance. Anti-rust, long lifeThe product has undergone blue zinc electrolytic treatment. The galvanic treatment prevents direct contact between air and the steel plate of the rail, thus resisting oxidation and corrosion. More than 100,000 opening and closing tests have been carried out to verify its durability, and the normal lifespan of the slides is more than 30 years. Lockable Drawer SlidesSimultaneously press the yellow handles on each side to lock and unlock the drawer and prevent it from sliding. The ball bearing glides on the 3 full-extension drawers allow the drawer to be fully extended for easy storage. Ball bearings inside the slides provide a smoother glide when closing and opening the drawer. Removable, SmoothAfter the drawer is fully extended, press and hold the yellow lock handle, then pull out to complete the separation. Pressing the yellow handles on both sides simultaneously locks and unlocks the drawer and prevents it from sliding. The locking mechanism only works when the drawer is fully closed or fully open. Usage TipsThe length of the rail should be the length of the drawer. Metal parts are sharp during installation. Protect your hands. It is recommended to wear gloves during installation.