A panel assembly adapted to absorb a blast effect, the panel assembly comprising, a panel adapted to be displaceably mounted to a frame ; an extendable connecting assembly extending from the panel and adapted to be attached to the frame so as to mount the panel to the frame , the extendable connecting assembly is adapted to extend in a longitudinal direction and in a controlled manner, wherein the extendable connecting assembly comprises, a controlling portion connected to the panel , and a connecting portion adapted to be attached to the frame , wherein the controlling portion is adapted to control the extension of the connecting portion from the controlling portion , characterized in that the connecting portion is glidably coupled to the controlling portion , whereby the connecting portion extends through the controlling portion , the controlling portion comprises a clamp adapted to clamp the connecting portion to restrain the movement of the connecting portion within the controlling portion , wherein, when the panel receives a blast, the connecting portion glides through the controlling portion , and the displacement of the connecting portion is decelerated in a controlled manner; wherein the extendable connecting assembly is adapted to extend in a controlled manner to decelerate the movement of the panel when receiving the blast effect. a panel adapted to be displaceably mounted to a frame ; an extendable connecting assembly extending from the panel and adapted to be attached to the frame so as to mount the panel to the frame , the extendable connecting assembly is adapted to extend in a longitudinal direction and in a controlled manner, wherein the extendable connecting assembly comprises, a controlling portion connected to the panel , and a connecting portion adapted to be attached to the frame , wherein the controlling portion is adapted to control the extension of the connecting portion from the controlling portion , characterized in that the connecting portion is glidably coupled to the controlling portion , whereby the connecting portion extends through the controlling portion , the controlling portion comprises a clamp adapted to clamp the connecting portion to restrain the movement of the connecting portion within the controlling portion , wherein, when the panel receives a blast, the connecting portion glides through the controlling portion , and the displacement of the connecting portion is decelerated in a controlled manner; a controlling portion connected to the panel , and a connecting portion adapted to be attached to the frame , wherein the controlling portion is adapted to control the extension of the connecting portion from the controlling portion , characterized in that the connecting portion is glidably coupled to the controlling portion , whereby the connecting portion extends through the controlling portion , the controlling portion comprises a clamp adapted to clamp the connecting portion to restrain the movement of the connecting portion within the controlling portion , wherein, when the panel receives a blast, the connecting portion glides through the controlling portion , and the displacement of the connecting portion is decelerated in a controlled manner; wherein the extendable connecting assembly is adapted to extend in a controlled manner to decelerate the movement of the panel when receiving the blast effect. <EOS>