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Nu-Calgon's 4293-04 is a sealant offered in a twelve-ounce can. This expanding foam is designed to seal and insulate areas that experience gaps or openings, such as those created for HVAC systems. It acts as an effective barrier against heat loss and gain, making it suitable for air conditioning and refrigeration applications.
This sealant is ideal for a range of insulation and sealing tasks. It dries completely in four hours and is suitable for use in various building materials including wood, masonry, and concrete.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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