Tunnel Doors

Up to five-foot door heights available to match typical tunnel house openings for retrofit or new construction. Door angle is adjustable for maximum efficiency in a wide range of climate conditions.
Air shoots upward and then swirls down and around from center of house for outstanding air mixing.	Soft door seal compresses easily to prevent air leakage when door is closed. Easy-to-install Chore-Time Rope Guide (patented) also shown.
Tunnel Door Air Flow Diagram	Curtain Sidewall Air Flow Diagram - Yellow shading indicates dead air space.
Pre-assembled door available for steel truss buildings or knee-brace applications.	Chore-Time Tunnel Doors in turkey facility
Videos Smoke Test Video Clip (340 kb) Smoke Test Video Clip (1714 kb) Smoke Test Video Clip (1316 kb)

Chore-Time's Tunnel Doors Tumble Air for Better Mixing Throughout the House

Better In-House Air Mixing

• Cyclonic air movement generates desirable airflow at bird level throughout the house.
• No more dead zones at side- and end-walls such as are typical of curtain sidewall or double door houses.
• Insulates about 8 times better than a curtain during winter (when completely closed) for reduced energy costs.
• During tunnel-assist mode, cold air is directed away from the birds until it has mixed with house air.

Innovative Design

• Wall-mounted, continuous “P”-shape seal is soft and pliable so it compresses easily even at cold temperatures.
   
  - Does not affect airflow when door is open
   
  - Is more forgiving of house imperfections for a tighter seal when door is closed.
• Modular panel design allows maximum flexibility in door size to match house sidewall openings.
• Laminated, composite door panel.
• Structure provides greater rigidity and dent resistance.