A refrigerator comprising: an internal chamber having a rear wall; a ventilation panel disposed on the rear wall, said ventilation panel defining a number of vents; an insulative member defining with the rear wall a duct to channel air through the vents of the ventilation panel; characterized by: a fixation system comprising a first strap and a second strap spaced apart from the first strap, wherein the first strap and the second strap are collectively configured to receive the insulative member, wherein the first strap includes a main body having a rear side and a front side opposing the rear side, wherein the rear side is configured to lie against a rear wall of the refrigerator and defines a first aperture configured to receive a first fastener to fix the main body to the rear wall of the refrigerator, wherein the front side defines a second aperture configured to receive a second fastener to fix the ventilation panel to the main body, wherein the second strap includes a second main body having a second rear side and a second front side opposing the second rear side, wherein the second rear side is configured to lie against the rear wall of the refrigerator and defines a third aperture configured to receive a third fastener to fix the second main body to the rear wall of the refrigerator and wherein the second front side defines a fourth aperture configured to receive a fourth fastener to fix the ventilation panel to the second main body. an internal chamber having a rear wall; a ventilation panel disposed on the rear wall, said ventilation panel defining a number of vents; an insulative member defining with the rear wall a duct to channel air through the vents of the ventilation panel; characterized by: a fixation system comprising a first strap and a second strap spaced apart from the first strap, wherein the first strap and the second strap are collectively configured to receive the insulative member, wherein the first strap includes a main body having a rear side and a front side opposing the rear side, wherein the rear side is configured to lie against a rear wall of the refrigerator and defines a first aperture configured to receive a first fastener to fix the main body to the rear wall of the refrigerator, wherein the front side defines a second aperture configured to receive a second fastener to fix the ventilation panel to the main body, wherein the second strap includes a second main body having a second rear side and a second front side opposing the second rear side, wherein the second rear side is configured to lie against the rear wall of the refrigerator and defines a third aperture configured to receive a third fastener to fix the second main body to the rear wall of the refrigerator and wherein the second front side defines a fourth aperture configured to receive a fourth fastener to fix the ventilation panel to the second main body. a fixation system comprising a first strap and a second strap spaced apart from the first strap, wherein the first strap and the second strap are collectively configured to receive the insulative member, wherein the first strap includes a main body having a rear side and a front side opposing the rear side, wherein the rear side is configured to lie against a rear wall of the refrigerator and defines a first aperture configured to receive a first fastener to fix the main body to the rear wall of the refrigerator, wherein the front side defines a second aperture configured to receive a second fastener to fix the ventilation panel to the main body, wherein the second strap includes a second main body having a second rear side and a second front side opposing the second rear side, wherein the second rear side is configured to lie against the rear wall of the refrigerator and defines a third aperture configured to receive a third fastener to fix the second main body to the rear wall of the refrigerator and wherein the second front side defines a fourth aperture configured to receive a fourth fastener to fix the ventilation panel to the second main body.