These casters attach easily to just about any bottom frame (sofas, cabinets and chairs).
The 1 5/8" diameter phenolic wheels swivel and the set of four can support 290 lb. The steel bracket is ribbed for extra strength, and sits inside a frame, maintaining a distance of about 1" from the floor.
Requires 3 3/4" each side of a corner for mounting.
Casters require #8 screws (not included).