An efficient walk-in cooler/freezer requires a specially constructed door assembly to provide a tight seal without freezing up. Harford Systems Inc., in Aberdeen, Maryland, designed a door jamb assembly using a custom pultruded part chosen for strength, functional versatility and appearance.

The heavy duty pultruded part provides a thermal barrier that eliminates a costly second heater circuit required on other low temperature doors. The thermally nonconductive pultruded door jamb is fitted with an anti-condensate heater circuit which goes around each door. Its resistance to heat flow means sweat-free cooler door openings — a real energy saver. The pultruded part is also strong, durable and corrosion resistant.

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