Proline 300i and 400i insulated doors are designed for strength and durability in tough, abusive applications. They provide visual separation, sound attenuation and thermal separation. The doors can be manufactured to fit virtually any size opening. The door is designed to comply with all USDA sanitation requirements.



Aluminum Aluminium

Antique_White Antique White

Beige Beige

Black Black

Cadet_Blue Cadet Blue

Chocolate_Brown Chocolate Brown

Cloud_Gray Cloud Grey

Forest_Green Forest Green

Medium_Brown Medium Brown

Metallic_Gray Metallic Grey

Navy Navy

Red Red

Royal_Blue Royal Blue

Stainless_Steel Stainless Steel

White White

Door Panel

The core of the insulated doors are 1-1/2” thick with a combination of wood and foam and are considered heavy-duty. Surface coverings include full height high pressure laminates, ABS impact resistant plastic, FRP, stainless steel, galvanized steel or aluminum.

Internal Reinforcement

Integrated tubular steel reinforcement from the hinge to the frame assures extra strength and durability.

Steel Spine

Steel spine reinforces the edge of the door against heavy impacts, standard on Proline doors over 36” wide, optional on doors under or equal to 36” wide. Recommended for heavy-duty applications.


Full perimeter replaceable gaskets are built into the ProLoc™ edge to stand up to heavy traffic while providing a positive seal for thermal separation. Partially gasket doors are optional.

Patented ProLoc™ Edge System

Chemically bonds to the face sheets providing a positive seal and preventing moisture or contaminates from entering the door panel.


Patented v-cam hinging system has a 250° hinge that swings 125° in each direction, wide enough to allow the entire door and bumper to completely clear the opening.

Window & Frames

ABS window frames are chemically bonded for a permanent seal that stands up to repeated washdowns. Single pane 1/8” thick polycarbonate window is used in the wood core doors, double pane windows are used in insulated doors.

  • Supermarket
  • Retail
  • Industrial
  • Institutional
  • Postal
  • Cold Storage
  • Food Service
  • Warehouse Distribution

  • Windows
  • Bumpers
  • Hinge Guard
  • Impact Plate
  • Cart Guards/Rub Rails