White diamond logo

Doors

At Horizon Structural Systems, we are proud to offer premium doors, windows, and hardware from Diamond Door Products, a leading manufacturer known for their quality and craftsmanship in the metal building industry. Explore our extensive range of products designed to meet your specific needs with precision and reliability.

Home / Components / Doors

Doors

Knock Down Doors

Horizon Structural Systems offers Diamond’s industry-leading knock down door systems. These doors are ideal for stocking programs and come in a wide variety of configurations, allowing for customization to match the unique specifications of your building and wall applications.

Door Choices

Doors are made from 20 gauge galvanized (A40) steel, with 18 gauge as an option. Doors are made reversible, with either a straight edge or beveled edge. Hinge reinforcements are 7 or 10 gauge. The skin itself can be textured or smooth. The standard core is polystyrene insulated with polyurethane an option when higher R values are required. Lock reinforcements for every lock type are available and included. An optional closer reinforcement is available.

Frame Choices
Frames are 16 gauge galvanized (A40) with a butted jamb to head connection for reversibility. Hinge reinforcements are 7 or 10 gauge. Many frame profiles are available, with the “kerf ” type frame becoming the industry norm due to the ease of weatherseal application. “Open back” frames are generally used when no framed opening will be supplied. In this case, the frame is commonly designed to match the girt depth. A frame with 1/2″ returns will be used in conjunction with a framed opening or other traditional wall applications (various anchors are available for each wall application).
Hardware Choices
Diamond provides several hardware lines depending upon the customer requirements. Each line is complete with many different types of locks and price points. The “best value” is Diamond’s own line of Southern Hardware. The best feature of this line may be the stainless steel finish on various grades of levers and knobs, or it may be the extended warranties, or it may be just the number of choices available.
Packaging
All knock down doors are poly-bagged, and then wrapped in corrugated sleeves for ultimate protection. Frames and miscellaneous hardware components are packaged in a corrugated box. Larger hardware items, such as panic devices, and closers are supplied in their factory boxes.
All items are palletized in appropriate quantities for the stock or project order. Export orders are packaged in registered export wood crates.
Paint
Doors have a baked-on finish coat of paint. The mills of paint averages 1.2 mills dry. Standard colors are white, bronze, or gray, but special colors are available for stocking programs or large products.

Pre-Assembled Doors

Our pre-assembled doors from Diamond are designed for efficiency and ease of installation. Arriving fully assembled with all hardware, lite kits, and a subframe system (c-channel/framed opening), these doors drastically reduce installation time, saving up to 4 to 8 hours of labor compared to knock down doors. With hardware pre-installed and guaranteed to work properly, Diamond’s pre-assembled doors offer long-term value and reliability.

Key Features
  • 20 Gauge Door, A40 Gal, Reversible, Insulated
  • ​Smooth or Textured Door Skins
  • 16 Gauge Kerf Frame, A40 Gal 5 3/4″ Depth,
  • Reversible
  • 16 Gauge Subframe system (full c-channel) – painted to match
  • 12 Gauge Adjustable Top/Bottom L-Brackets
    Southern HD Grade 2 Lever Lock US32D (stainless steel)
  • Kerf frame profile and weatherseal
  • Full 5 3/4″ Aluminum Saddle Type Threshold
  • Ball Bearing, NRP Hinges (powder coated)
  • Exterior Mount Sweep/Drip Combination
  • Full Line of Optional Hardware
Common Options
  • 18 Gauge Door Upgrade
  • Stainless Steel Hinges (US32D)
  • Mortise Lever Lock
  • Exit Devices
  • Closers
  • Lite Kits (single pane and insulated glass)
  • Kickplates
  • Crash Chains
  • Latchguard
  • Special Color
  • ​Special Sizes
Paint

Doors have a baked-on finish coat of paint. The mills of paint averages 1.2 mills dry. Standard colors are white, bronze, or gray, but special colors are available for stocking programs or large products

Packaging

Doors are made to individual order specifications. After doors are completely assembled they are packaged in wood “surround”. Doors are skidded up to four (4) high on 3070’s and 4070’s and two (2) high on 6070’s. Skids are 4-way and have 4 length long runners.

Windows

Aluminum Windows

We offer Diamond’s aluminum windows, specifically engineered for metal building applications. Available in both premium and economy options, these windows feature fins that match wall panel profiles for a seamless fit. The economy windows come with a straight fin for framed openings, while the premium windows offer “universal fins.” An optional subframe system is also available.

Looking for high-quality doors, windows, and hardware tailored to your metal building project? Contact Horizon Structural Systems today to learn more about our offerings from Diamond Door Products. Our team is ready to assist you in finding the perfect solution.