Abstract: A refrigerator cabinet having a selected height and width used in a recreational vehicle, the improvement comprises an installation template permanently installed as a ventilation frame. The installation template produces manufacturer specified ventilation requirements for the ventilating refrigerating apparatus provided on the refrigerator and located on the refrigerator within the refrigerator cabinet. The installation template includes a top, bottom and side flanges, the dimensions of each of the flanges being selected according to the height, width and ventilation requirements of said refrigerator. Ambient air flow through the installation template may be used to produce the specified ventilation requirements for the refrigerating apparatus. In addition, an air movement device for providing air flow through the installation template for ventilation around the refrigerating apparatus may be used, such as a fan, reducing the amount of ventilation area required for the installation template.

Abstract: A heat recoverable tubular composite article comprising an inner layer comprising a crosslinked elastomeric polymeric material having a modulus at 100% elongation at 20.degree. C. of about 40 to about 900 pounds per square inch and an outer layer comprising a thermoplastic material having a 2% secant modulus at 20.degree. C. of about 5,000 to about 100,000 pounds per square inch said composite article (1) being formed by coextrusion, (2) having a direct bond between said layers with a peel strength of at least 6 pounds per linear inch, and (3) being in a radically expanded configuration, said thermoplastic outer layer being capable of retaining the elastomeric inner layer in an expanded configuration at ambient temperature and incapable of retaining the elastomeric layer in an expanded configuration at a temperature above a predetermined temperature thereby permitting the composite article to recover to or toward its unexpanded configuration.