DIMENSIONS: * Width- Outside from wheel to wheel: 18 5/8"WHEELS: * Should be inflated to 30 PSI.REPLACEMENT WHEELS:10" Pneumatic: Uline, 350 lb. cap H-3359COMPATIBLE WHEELS:10" Rubber: Uline, 250 lb. cap H-335710" Rubber: Uline, 400 lb. cap H-335810" Rubber: Uline, 350 lb. cap H-100WH10" Rubber: Magliner, 500 lb. cap H-337910" Pneumatic: Magliner, 500 lb. cap H-3380