High-performance thresholds
With ImperiSealTM Technology
Quanex’s ImperiSeal™ technology is your best defense against the elements. With a continuous filament that positively seals the adjusting rail to the deck of the sill, a unitary exposure surface is created that stops water at the threshold and eliminates the need for sill pans.
Quanex’s ImperiSeal™ technology is your best defense against the elements, effectively stopping water at the threshold and eliminating the need for sill pans in our high-quality door thresholds for exterior doors.
Explore our diverse selection of door thresholds for exterior doors. We offer various materials and designs to meet your specific needs.
| 5Y Sill with ImperiSeal | 5C Cam-Am Sill | FirstStep Sill | ||
|---|---|---|---|---|
| Structure | Composite Substrate |
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| Injection Mold | N/A | N/A |
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| Real Wood |
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N/A | N/A | |
| Thermal Break |
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| Half Base |
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N/A | N/A | |
| Full Base |
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| Cut-down Options | Unlimited | Unlimited | Unlimited | |
| Finish | Aluminum (Mill) |
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| Bronze |
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| Brass | Option | N/A | N/A | |
| Brushed Nickel |
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Option | Option | |
| Rail Options | Black Vinyl |
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N/A |
| Woodgrain Vinyl |
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N/A |
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| Bronze Vinyl |
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N/A |
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| Hardwood (Real Wood) |
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N/A | N/A | |
| Aluminum (Mill) |
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N/A |
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| Aluminum (Bronze) |
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N/A |
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| Sill Widths | 3-1/2" |
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N/A |
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| 4-9/16" |
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| 5-5/8" |
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N/A |
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| 6-9/16" | N/A |
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N/A | |
| 7-5/8" |
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N/A |
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| Basic Configuration | Single |
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| French (Double) |
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| Patio |
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| Continuous Sidelite |
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| Nosing | Wood |
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N/A | N/A |
| Vinyl |
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| Aluminum |
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N/A |
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In addition to a wide array of door thresholds for exterior doors, including options like the robust aluminum threshold and the elegant hardwood door threshold strip, we focus on streamlining your door production. We offer pre-assembled components and accessories custom-made to your specifications for easy integration into your production line.
Assembled parts from Quanex include:
- High-quality window and patio door screens
- Custom and removable tape-applied window and door grilles
- Bay and bow window kits
- Astragal hardware packets
- MPLS Astragal Conversion Kits
As the needs of entry door producers and installers evolve, Quanex remains ahead with a comprehensive line of door thresholds for exterior doors, including durable aluminum threshold solutions and beautiful hardwood door threshold strip options, all designed to meet performance, installation, and budgetary goals.
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Q: What is a door threshold, and why is it important?
A: A door threshold is the strip at the bottom of an exterior door that helps seal the gap between the door and the floor. It prevents air and water infiltration, improves energy efficiency, and provides a smooth transition that can meet ADA accessibility requirements.
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Q: What types of door thresholds does Quanex offer?
A: Quanex offers a wide range of door thresholds, including aluminum thresholds, hardwood door threshold strips, and advanced sill systems with ImperiSeal™ technology. Options are available for single, double (French), and patio doors, with multiple finishes and sill widths.
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Q: How does ImperiSeal™ technology improve door threshold performance?
A: ImperiSeal™ uses a continuous filament that seals the adjusting rail to the deck of the sill. This creates a watertight barrier at the threshold, virtually eliminating water infiltration and removing the need for sill pans.
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Q: Are Quanex door thresholds ADA-compliant?
A: Yes. Many of our threshold designs meet ADA (Americans with Disabilities Act) requirements by providing a smooth, accessible transition without sacrificing performance.
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Q: What materials are available for Quanex thresholds?
A: Quanex thresholds are available in durable aluminum, real hardwood, and woodgrain or bronze vinyl finishes. Multiple sizes, cut-down options, and thermal break features are available depending on the model.
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Q: Do Quanex thresholds help improve energy efficiency?
A: Yes. Quanex thresholds are engineered to resist air and water infiltration, reducing drafts and improving overall energy efficiency in residential and commercial entry doors.
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Q: Can Quanex thresholds be customized for my door system?
A: Absolutely. Quanex provides pre-assembled threshold components and custom configurations tailored to manufacturer and installer needs, making integration into production lines fast and efficient.
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Q: What sill options are available with Quanex thresholds?
A: We offer several sill designs, including the 5Y Sill with ImperiSeal™, the 5C Can-Am Sill, the FirstStep™ Sill, and the Top-Drain Sill. Each sill type provides unique performance and design benefits for different door applications.
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Q: How do I choose the right door threshold for my project?
A: The right threshold depends on your door type (single, double, patio), performance needs (water resistance, ADA compliance, thermal break), and preferred material (aluminum, hardwood, or vinyl). Our team can help guide you to the best fit.
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Q: Where can I buy Quanex door thresholds?
A: Quanex thresholds are available through door manufacturers, distributors, and authorized partners. Contact us directly to connect with a supplier near you.