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HCD-130LE and HCD-230LE are heavy-duty flanged-style frame industrial control dampers with fabricated airfoil blades designed to control airflow and provide shutoff in lab exhaust systems. The HCD-130LE has pressure velocity capabilities up to 8.5 in. Wg (2.1 kPa) and 4000 fpm (20.3 m/s). The HCD-230LE has pressure velocity capabilities up to 15 in. Wg (3.7 kPa) and up to 5000 fpm (25.4 m/s). Available with parallel or opposed blade action, these dampers can be selected as replacements for existing lab exhaust units or as a new stand-alone damper in custom lab exhaust units.
