350S / 354S
Commercial Insulated Steel Sandwich Doors
Hörmann 350S heavy-duty (25 gauge 2” thick) and 354S industrial-duty (24 gauge 2” thick) commercial doors are insulated as standard.
As with all our commercial models, traditional Hörmann quality is evident with our layered panel bonding construction process. First, hot dipped galvanizing is applied to the steel substrate, followed by a baked-on polyester base coat, then a durable baked-on polyester finish coat. This layering creates a long-lasting surface finish for maximum protection against adverse effects of the elements. This steel finish is applied on both the inside and outside door skins which are then bonded to a HCFC-free polystyrene core. The 350S and 354S have an R-value of 10.4, so with any model, enhanced energy efficiency and sound-dampening are achieved. A polystyrene insulation fills the top of the door channel for maximum insulation.
Our optional double end stile design along with thermally broken tongue and groove section joints add to overall structural integrity, and standard bottom section safety fixtures contribute to safety. The 350S are available in white, brown, sandstone, black, or silver metallic. The 354S is available in white or brown.
Product Highlights
| Feature | Rating |
|---|---|
| Thermal Rating | |
| Durability | |
| Low Maintenance |
| Characteristic | 350S Heavy Duty | 354S Heavy Duty |
|---|---|---|
| Insulation value | U-Factor 0.21 / R-10.4 | U-Factor 0.21 / R-10.4 |
| Steel thickness | 25 ga. | 24 ga. |
| Section thickness | 2" | 2" |
| Design options | 3 panel styles + 3 window designs | 2 panel styles + 3 window designs |
| Colors | 5 color finishes | 2 color finishes |
| Warranty | Door: 10yr - Hardware: 1yr - Springs: 1yr | Door: 10yr - Hardware: 1yr - Springs: 1yr |
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Panel Construction
The industry leader in innovative door safety, insulation, and strength
Precisely designed thermally broken section joints reduce air infiltration and create a weather tight seal.
A 3-layer steel front and back construction with insulating polystyrene core increases energy savings.
A galvanized finished painted steel provides superior corrosion resistance for years of trouble-free performance
Keeps out wind, rain, debris and other elements for added energy savings.
Section Detail
The panel textures on the 350S and 354S varies based on the section design. The microgroove design has a stucco texture while the flush and raised panel designs have a wood grain texture. Our door panels are constructed using top-of-the-line galvanized steel sheets that are treated with four layers of a strength and weather-resistant coating for a long-lasting surface finish and reduced maintenance costs.
Hörmann Innovations
Engineering Excellence
Our double end stile design adds to the overall structural integrity and long term performance of the door.
Note: Double end stile is available as an upgrade for all door sizes, but standard for doors over 16’2” wide.
Safety
Hörmann 354S and 350S doors come with safety fixtures on the bottom sections for added protection and peace of mind.
Durability
350S & 354S door panels are prepared inside and out for maximum protection against the elements, a long lasting surface finish, and reduced maintenance costs. The door panels are constructed with application of hot dipped galvanizing to the steel substrate, followed by a baked-on polyester base coat and a durable baked-on polyester finish coat.
Door Design Options
Choose your panel, color and windows
Panel Designs
*Short Raised Panel (in certain configurations)
Surface Finish Options
Regardless of the color you choose, all surface finishes are covered with a durable baked-on polyester finish coat for long-lasting looks you expect from the Hörmann brand.
Color Options
*Silver Metallic NOT available in short raised panel designs
