Product Details

ProVia’s Signet fiberglass doors are designed to perform better than traditional fiberglass doors. The hinge and strike stiles are dovetailed to the top and bottom rails to form a solid, integrated frame ensuring unmatched strength and durability.

This highly customizable door system is available in Cherry, Mahogany, Oak, Fir, Knotty Alder, and Smooth exteriors. ProVia utilizes their exclusive DuraFuse™ Finishing System featuring P3 Fusion for a long-lasting durable finish, plus it’s protected by a 10-year finish warranty.

  • Hinge and strike stiles are 2-5/8″ and 4-1/4″
  • Custom widths and heights.
  • Available up to 8′.
  • Foam filled for maximum efficiency and strength
  • Authentic wood look
  • Available with ADA Compliant Threshold
  • Protected by ProVia’s Lifetime Limited Transferable Warranty
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twinsulator sh features

A: Powder coated aluminum extrusions
B: ThermaProtect thermal break insulation barrier to protect from the elements
C: 3/4″ dual glaze cardinal LowE 366 Double Strength Glass
D: Warm edge super spacer for increased efficiency



Creme White

Grid Options
nt grids internal contoured

Internal – Contoured

nt grids internal flat

Internal – Flat

Glass Options

nt glass rain


nt glass obscure


nt window style picture


nt window style sliding


nt window style single

Single Hung

Single Hung

  • U-Factor: 0.43
  • SHGC: 0.23
  • Frame Depth: 2-5/8″
  • AAMA Rating: C40

Dual Pane, Cardinal LoE3-366 with Argon


  • U-Factor: 0.42
  • SHGC: 0.22
  • Frame Depth: 2-5/8″
  • AAMA Rating: LC40

Dual Pane, Cardinal LoE3-366 with Argon


  • U-Factor: 0.33
  • SHGC: 0.25
  • Frame Depth: 2-5/8″
  • AAMA Rating: LC60

Dual Pane, Cardinal LoE3-366 with Argon

Give Us a Call

(214) 305-5108

Product Specs

  • Brand:  NT Windows

  • Series: Twinsulator™

  • Exterior Color: Creme White, Bronze, Black

  • Interior Color Creme White, Bronze, Black
  • Composition Aluminum extrusions
  • Construction Type: New construction, replacement, or commercial
  • Styles: Single Hung, Slider, Picture, Specialty Shape
  • Frame: 2-5/8″
  • Thermally Broken Frame: Yes
  • Thermally Broken Sash: Yes
  • New Construction Fin: Optional
  • Mobile/Stucco Fin: Optional
  • Energy Star Certification: Yes
  • NFRC Ratings: Yes
  • WDMA Hallmark Certification: Yes
  • AAMA Certification: Yes
  • Warranty-Residential: Lifetime
  • Warranty-Commercial: 10 Year (Extended available)

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