The washing machine base is sturdy and can withstand a maximum weight of 500 pounds. It's very simple to assemble, it only takes 3-5 minutes.Installation instructions on the box. Washing machine base size adjustable, suitable for most household appliances size. It comes with adjustable lifting feet to keep your appliances on uneven ground, effectively reducing the vibration of the washing machine at work. It solves the difficult problem of cleaning the bottom of heavy equipment . It effectively avoids the bottom being eroded or rusted in contact with moist ground in wet environments. So it can improve the service life of home appliances. Specification: Length:18.5-24inch Width:17.5-23inch Height:3-4.5inch Package: - 4 x Rubber wheel - 4 x PVC Support Plate - 4 x Stainless Steel Square Tube - 24 x Solid Screws Notes: When receiving the product, please check whether the product is intact and the accessories are complete,if there is a problem, please contact us, we are always waiting.