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An open front door of a home, close-up view highlighting door thresholds for exterior doors.

Door Thresholds for Exterior doors

High-performance thresholds

With ImperiSealTM Technology

Virtually eliminate air and water infiltration

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.

Door threshold for exterior doors featuring an aluminum threshold with a breakdown of parts. Text highlights: One piece screw provides long life and ease of adjustment; Door Industry's most natural looking woodgrain vinyl; Flush mounted screws provide a tight door bottom-to-rail seal; ImperiSeal TM; Solid extruded base

door Threshold PRODUCTS

Explore our diverse selection of door thresholds for exterior doors. We offer various materials and designs to meet your specific needs.

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The Highest Quality Door Thresholds

5Y Sill with ImperiSeal 5C Cam-Am Sill FirstStep Sill
Structure Composite Substrate
Injection Mold N/A N/A
Real Wood N/A N/A
Thermal Break
Half Base N/A N/A
Full Base
Cut-down Options Unlimited Unlimited Unlimited
Finish Aluminum (Mill)
Bronze
Brass Option N/A N/A
Brushed Nickel Option Option
Rail Options Black Vinyl N/A
Woodgrain Vinyl N/A
Bronze Vinyl N/A
Hardwood (Real Wood) N/A N/A
Aluminum (Mill) N/A
Aluminum (Bronze) N/A
Sill Widths 3-1/2" N/A
4-9/16"
5-5/8" N/A
6-9/16" N/A N/A
7-5/8" N/A
Basic Configuration Single
French (Double)
Patio
Continuous Sidelite
Nosing Wood N/A N/A
Vinyl
Aluminum N/A

Aluminum Thresholds group with sill covers.

Designed around the needs of manufacturers, installers and homeowners

Create efficiencies with Pre-Assembled components

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

Astragal hardware packets

your Door Threshold Partner

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.

Smiling female Quanex customer service employee
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