A support apparatus comprising an engagement member having a plurality of walls integrally formed with each other and a support member. The support member includes a bracket member pivotably coupled to the engagement member and a leg member pivotably coupled to the bracket member. The bracket member comprises a plurality of fixing apertures corresponding to a fixing member extending from the engagement member. Each fixing aperture is configured to receive the fixing member. A pivot aperture is provided for receiving a pivot member which is configured to be received by a pivot support positioned on the engagement member. A biasing member is coupled to the pivot member such that the pivot member is movable with the bracket member away from the engagement member and such that the bracket member is rotatable when the pivot member is moved away from the engagement member. The leg member is adjustably extendable.