Patent ID: 8839592

Claim:
An adjustable panel system, comprising: an upper panel assembly, the upper panel assembly comprising: an upper panel frame having an upper frame face, an upper side rail, and a guide block positioned along the upper side rail; and a sheet, wherein the sheet is fastened to the upper frame face; a lower panel assembly, the lower panel assembly comprising a lower panel frame having a lower frame face and a lower side rail having a lower vertical guide slot; a tightening member; and an inserting assembly; wherein the upper panel assembly and the lower panel assembly are engageable by inserting the inserting assembly into the lower vertical guide slot of the lower side rail, inserting the inserting assembly through the upper side rail, and mating the tightening element with the inserting assembly; wherein while the upper panel assembly and the lower panel assembly are engaged, and while the tightening member is loosened on the inserting assembly, the upper panel assembly is slidable on the lower panel assembly; wherein while the upper panel assembly and the lower panel assembly are engaged, and while the tightening member is tightened on the inserting assembly, the sheet and the lower frame face form a seal.