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Hoffman 89140464SP Click-Fit design quickly installs into enclosure wall; no tools or screws requiredOpens with the flick of a finger for easy filter replacementEnclosure side wall mountingReverse airflow option on HF13 models available to push/pull air through higher static pressureStandard rope gasket provides proper seal to the enclosureSimilar cut-out sizes as other filter fan manufacturersTerminal block connectionsOptional thermostat available to save energy and extend service lifeHinged grille remains attached after openingSize rage from 4 inch (102 mm) to 13 inch (325 mm)Free air flow from 21 CFM (36 m3/hr.) to 484 CFM (822 m3/hr.)Service life hours from 40,000 to 100,000 hoursOperating temperature range fo -4 F/-20 C to 149 F/65 C
