Removable partition walls

Claim 1

A PANEL CONSTRUCTION OF THE TYPE USED AS A SOUND BARRIER COMPRISING, IN COMBINATION, A PLANAR REINFORCING FRAMEWORK DEFINING AN OPENING THEREIN, AT LEAST ONE LEAD SHEET SUBSTANTIALLY CO-EXTENSIVE WITH SAID FRAMEWORK SECURED TO ONE SIDE OF SAID FRAMEWORK, AT LEAST ONE LAYER OF A POROUS MATERIAL SUBSTANTIALLY CO-EXTENSIVE WITH THE FRAMEWORK OPENING DISPOSED WITHIN SAID OPENING SUCH THAT A SPACE IS DEFINED BETWEEN SAID LEAD SHEET AND SAID POROUS MATERIAL, A PAIR OF RIGID SHEETS SUBSTANTIALLY COEXTENSIVE WITH SAID RENFORCING FRAMEWORK RIGIDLY SECURED THERETO, ONE OF SAID SHEETS ABUTTING THE LEAD SHEET AND THE OTHER OF SAID SHEETS ABUTTING THE LAYER OF POROUS MATERIAL,. MEANS FOR ADHESIVELY SECURING SAID POROUS MATERIAL TO THE ABUTTING SHEET, A TONGUE FORMED ALONG ONE LONGITUDINAL EDGE OF SAID FRAMEWORK AND A GROOVE FORMED ALONG THE OPPOSITE LONGITUDINAL EDGE OF SAID FRAMEWORK, AND GASKET MATERIAL DISPOSED IN SAID GROOVE.