Double Slider Overview

Similar to all of our other window options, our double slider windows are created to promote significant airflow. Fashioned with numerous internal air chambers, our double sliders warrant exceptional insulation and thermal efficiency. Opening a window has never been so easy; the new Insta-Lok shoe allows you to effortlessly glide open the sash for easy access to both the interior and exterior of the glass.


Installation Options

Installation has a significant impact on the performance and longevity of a window. That’s why we’ve partnered with trustworthy contractors who have a proven track record of successful installations. In addition to full window replacements, our trusted partners can perform three types of installation:


  • Complete removal of old window up to the house framing
  • Option of 3 different size brick mold accessories
  • Allows for upgrades to interior trim and jamb, as well as hardware
  • Offers greater efficiency performance upgrade than retrofit
  • Ideal for replacing damaged or poorly insulated windows


  • Sash is removed and replaced
  • Window frame and exterior and interior trim remain in tact
  • Faster and less expensive process than full window replacement
  • Ideal when frame is already well insulated and in good condition
  • Allows for upgrade to window glazing for improved comfort and performance


  • Complete removal of old window up to the house framing
  • Exterior is finished with just caulking or aluminum flashing
  • Allows for upgrades to interior trim and jamb
  • Offers greater efficiency performance upgrade than retrofit
  • Additional option for replacing damaged or poorly insulated windows

Interior Trim Options

Our vinyl windows come with a variety of interior vinyl trim options for refined and versatile styling. We combine advanced technology with the finest materials for durable, flawless finishes that will retain their colour year after year. Standard finishing options include wood stain and contemporary and classic rosettes, but we can also accommodate custom colours.

Interior Jamb Sizes

KORAL Windows offers four standard vinyl jamb sizes to ensure that the window installation process is seamless and smooth. For added flexibility we can also provide wood jamb extensions, frame moldings and corner blocks.

Exterior Brickmold

Our brickmolds are crafted from a durable uPVC powder compound, created to withstand the harshest elements. This maintenance-free material is available in a variety of sizes and colours, for long lasting curb appeal.

Window Features

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  1. We build our vinyl windows with a high number of internal air chambers for superior insulation, thermal efficiency, sturdiness and sound abatement.
  2. Maintenance-free PVC jamb extensions, corner blocks and frame moldings provide added flexibility for interior finishing.
  3. Fusion-welded corners enhance the appearance of the window while eliminating the need for sealants and adhesives. The flawless surface is entirely airtight and watertight. We also weld internal walls to boost the structural integrity of our vinyl windows.
  4. Our sealed glass units have an overall thickness of 13/16”. Most of our window styles allow you to choose between different glazing types and thicknesses. These include single, double, triple and Low-E glazing, as well as a decorative glazing that ranges from 3/4” to 1-1/8”.

Grid Designs

Grid Types