Add a layer of protection to heating, ventilation and HVAC systems with this black insulated jacket. It's made of a thick, durable material that forms an insulating blanket and is flexible for easy application. The glass-fibre sleeve also contains a high-quality exterior covering made of polyethylene. It reduces the transmission of ultraviolet light and is resistant to scuffs and moisture. The protective insulation helps to prevent heat loss to promote efficiency. This lets you sustain a desirable indoor temperature, reduce wear on appliances and lower heating and cooling costs. The insulation sleeve for pipes also prevents the development of condensation to protect against premature pipe damage. The black insulated jacket measures 4 in x 10 ft and comes ready to use.