Midland Garage Door Mfg. Co. Commercial Garage Doors

CU175 Polyurethane



Midland's quality constructed 1-3/4" commercial polyurethane insulated overhead door, has an energy R-Value of 16.3 and is one of the most energy efficient overhead doors in the industry.  Our CU175 is both good looking, tough, and guaranteed to keep you warm in the winter and cool in the summer.

When you choose a Midland overhead door you can be confident that you have chosen the best overhead door that money can buy!

  • 26 gauge rugged exterior and interior steel.
  • Efficient polyurethane core resulting in an exceptional R-Value rating of 16.3.
  • Heavy duty galvanized steel track and hardware.
  • Stucco Embossed finish with a light groove detail.
  • Available with many optional track configurations.
  • Available with two window size options.
  • Available in Imperial White color only.


»Architectural Specifications

    • Work Included
      The doors will be Model CU175 as manufactured by Midland Garage Door Mfg. Co.
    • Other Work
      Related structure work, opening preparation, field painting and electrical work etc. falls into the responsibility of other trades.
    • Sections
      Sections will be roll-formed, hot dipped, galvanized G60 (minimum), a minimum yield strength of 33,000 psi, complying with ASTM A653 and ASTM A924, 26 ga. exterior and 28 ga. interior steel stucco embossed and a micro-grooved surface.   Sections will incorporate a PVC thermal break to prevent heat or cold conductivity.
    • Insulation
      Insulation will be form-in-place 1 3/4" urethane free of CFCs and HCFCs and will be laminated to provide strength and prevent loss of thermal efficiency over time.  The insulation will have a calculated R-Value of 16.3, U-Value of .067, complying with ASTM E 84 flame-spread and smoke-developed.
    • Air Infiltration
      All doors will be constructed with a PVC strip and cap between sections to resist air infiltration and provide a tight fit, complying with ASTM E 283, maximum rate: .08cfm@15mph and 0.08cfm@25mph.
    • Wind load
      Doors will be designed to meet or exceed industry standards for wind loads (ANSI/ DASMA 102-1996), uniform pressure (velocity pressure) of 20 lbf/sq. ft. acting inward and outward. Deflection of door in the horizontal position will not exceed 1/120 of the door width. Please consult factory for unusual requirements.
    • End Stiles
      End Stiles will be 16 gauge (13 gauge optional) steel and incorporate a thermal break to help prevent heat/cold conductivity between the inside and outside steel skins.
    • Hardware
      Hinges and fixtures will be G60 galvanized steel complying with ASTM A 36 and ASTM A 123 with full floating ball bearing rollers and hardened steel races.  The roller sizes will be adequate for design requirements and limitations.
    • Track
      Track is 2" or 3" depending upon door size and requirements and bracket or angle mounted depending upon door size and requirements.
    • Spring Counter balance
      Counter balance shall be oil tempered, helical wound torsion springs complying with ASTM A 229, mounted on a ball bearing cross header shaft engineered to comply with ANSI/DASMA 102-1996. Long Life springs of 25,000, 50,000 or 100,000 cycles may be specified.  Galvanized aircraft type lifting cables with minimum safety factor of 8 to 1 and cast aluminum drums are standard.
    • Lock
      Lock will be interior mounted slide lock, (optional commercial keyed lock is available)
    • Weather strip
      PVC strip sections meeting section caps attached inside every joint. Bottom weather strip will be U'd shape astragal fastened to the bottom of the door with an extruded aluminum holder for an effective seal at the sill.
    • Finish
      Finish will be baked-on polyester over epoxy primer with White interior and White exterior color
    • Operation
      Operation will be by manual pull rope.  Optional chain hoist and electric operator are available.
    • Installation
      Doors should be installed in compliance with Midland Garage Door Mfg. Co. instructions by authorized Midland Garage Door installation professionals.
    • Options
      • Thermal Glazing
      • High Cycle Springs
      • Jamb Weather strip
      • Electric Operator
      • Chain Hoist
      • Bottom Sensing Edge
      • Rubber Header Seal

Click here to download specifications in PDF format


»Color Design Options

Midland's CU175 overhead door is available in Imperial White color only.  Great looks and great quality, now that's real value! Enhance the look of your building with a Midland overhead door.

»Window Design Sizes

Midland Garage Door offers two window  sizes for your new door.  These windows are sure to fit any design preference.  Our window design sizes are designed with the same attention to detail we put into all of our products.


Plain- 24x7- 24x12- sizes