Culver Armature and Motor

Lau Series LAD and LHAD Air Curtains can be used in a variety of locations and applications. They are designed to keep air, dirt, dust, fumes, insects, and pollen outside while maintaining a cleaner healthier environment inside.

Typical applications include fly and insect prevention at restaurant doors, thermal barriers at shopping mall entrances, and wind resistance and temperature separation at factory freight doors.

Lau Air Curtains save energy and lower building operating costs because they reduce heat loss and gain through open doors and windows while enabling traffic to flow unobstructed. They also improve energy efficiency by reducing the load on the buildings HVAC system while maintaining a comfortable air temperature indoors.

Why have an Air Curtain?

• Comfort - In wintertime, the air curtain reduces cold air infiltration from the outside and helps keep heated air from escaping. In summer, the curtain does the opposite, keeping cool air in while helping reduce warm air from leaking through.
• Flying Insects - The high velocity air protects openings against flying insects
• Dust, Pollen, Fume & Contaminant Control - Lau Air Curtains keep airborne contaminants out of the work environment.
• Safety - Air Curtains provide unobstructed visibility to an opening for customers, employees, and equipment.
• Energy Efficiency - Air Curtains operate year round in all climates. In the summer, they seal in air conditioning and seal out hot air. In the winter, the opposite is true.
• Cost Savings - By providing an invisible wall, energy used by Lau's Air Curtain is more than offset by the savings of the buildings HVAC equipment.

LAD Series (Without Electric Heater)

LHAD Series (With Electric Heater)

¹ Lau's standard control box comes factory mounted on the right side facing the inlet grill.
† Indicates that slave control box is required for proper operation. Slave control boxes ship loose.

Chart Top

Sound test to ANSI S12.31.

Suggested Air Curtain Specifications - LAD & LHAD Series

Furnish and install at the locations shown on the plans or in accordance with the schedules, commercial air doors with electric heat that meet the following minimum requirements.

Air door cabinet shall be minimum 20 gauge (0.9) thick painted galvanized steel. Discharge grille shall have adjustable blades made of 6063T5 aluminum and shall extend the full length of the discharge opening. The discharge grille shall be securely fastened by 24 gauge (0.6) stainless steel clips. Adjustable inlet grille shall be single deflection extruded aluminum with clear anodize finish.

Cabinet finish shall be baked enamel with minimum 50% Kynar finish. Colors shall be one of 15 Lau standard colors or as specified by the customer.

(LHAD) Air doors shall be provided with a factory furnished and mounted NEMA 1 control box, electric heating elements and thermostat. The control box is mounted on the right hand [left optional] side facing the inlet grille and shall control on/off/auto operation of the motor/blower assembly. The heater elements shall consist of wired heating coils located in the discharge and shall include a protective screen. Lau electric heated air doors shall include a 24 vac heating thermostat with system and fan switches. Thermostat shall be remote mounted for customer flexibility.

Motor and blower base shall be manufactured with minimum 16 gauge (1.6) galvanized steel. Motor shall be (specifier select) 208V/1ph/60hz multiple speed (or) 240V/1ph/60hz multiple speed (or) 480V/3ph/60hz single speed. The blower shall include forward curve (FC) double wide double inlet wheel (DWDI).

Optional door switches shall be (specifier select) plunger operated (or) roller operated.

Optional air filters shall be reusable and cleanable aluminum wire mesh.

Air doors shall be:

• UL listed – UL 2021 (LHAD)
• UL listed – UL 507 (LAD)
• Canadian listed – CSA C22.2
• Airflow tested in accordance with AMCA Standard 220
• Sound tested in accordance with ANSI S12.51

A (5) five year warranty on the entire air door assembly.
Air Curtains with parts-only or less than 5 year warranty shall not be acceptable.

When submitting Air Curtain specifications, include curtain width, application, location, color, motor voltage, heater kW, and variations.

Baked Enamel Coatings

Lau Air Curtain finishes come in a variety of colors to blend with surrounding areas. Our finishes provide excellent weather resistance and flexibilty.

Lau's High Performance Baked Enamel Finish: 50% PVDF finishes provide fluoropolymer benefits such as long color life and resistance to chalking and chemicals

All Lau Air Curtains recieve factory applied, baked-on color coating folowing thorough cleaning and pretreatment of metal. Specify color name and number when ordering.

Lau can match colors in Kynar, Baked Enamel and Pearledize finishes. The colors shown below are only a sample of the thousands of colors available. Please contact Lau for information regarding cutom color matching.