Williams Furnace Co.: Air CurtainsAvailable in various sizes in the range of 26-72 inches, the manufacturer’s air curtains come in operating voltages of 120, 240, or 460 V. The units are low maintenance and operationally cost-effective, said the company. They are available in a soft-white or black-powder coat abrasion-resistant finish, and stainless steel models are available for sanitary applications. The optional variable-speed airflow controller dials in needed cfm requirements and is adjustable to changes in building conditions. They are NSF-certified and ETL-listed.

Williams Furnace Co.

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