The reflective aluminum foil effectively reduces heat transfer while reinforced oxford cloth provides tear resistant durability, ensuring insulation and long lasting Ideal for homeowners in climates and commercial facilities requiring robust outdoor air conditioning unit protections against extreme temperatures and heavy rainfalls Perfectly shield exposed refrigerant lines on window mounted or split systems air conditioners installed in balconies, rooftops, or exterior wall from UV damage and weather part Protect your air conditioning pipes year round with this zippered cover featuring double layer aluminum foil and waterproof oxford fabric for superior weather resistance and protections Universally zipper design accommodates various pipe diameters ( 1 / 4 " to 1 1 / 8 ") across major air conditioning brands, offering easy installation without tools for residential and commercial air conditioning systems