.sash-Dropdown:hover .sash-DropdownTrigger, .sash-Dropdown:focus-within .sash-DropdownTrigger { border-bottom-color: --var(--tw-color-primary) } .sash-Dropdown:hover .sash-DropdownContent, .sash-Dropdown:focus-within .sash-DropdownContent { display: block; } .navTabs li:hover > div, .navTabs li:focus-within > div { display: block; }

- Windows
- Shop Online or by Appointment
  Casement
  Hinged at the side and swing outward.
  Shop
  Learn
  Awning
  Hinged at the top and swing out from the bottom.
  Shop
  Learn
  Double-Hung
  Two sashes capable of sliding up and down.
  Shop
  Learn
  Single-Hung
  Slides up from the bottom, while the top sash stays stationary.
  Shop
  Learn
  Picture
  Fixed frames that do not operate.
  Shop
  Learn
  Sliding
  Open horizontally, gliding on a track from one side to the other.
  Shop
  Learn
- Available by Appointment Only
  Custom
  Made-to-order windows not found in the standard offering.
  Learn
  Pass Through
  Slides, folds or pushes open to pass items between spaces.
  Learn
  Bay
  Fixed and operable windows form a curve that extends out from a home’s exterior.
  Learn
  Bow
  Four or more windows, each the same size and shape, joined to form a smooth curve.
  Learn
- Pre-Built Windows and Parts
  Stock Inventory
  Shop
  Screens, Parts & Accessories
  Shop
- Shop All Windows
- - - Window Inspiration
    - By Color
    - By Style
    - By Room
    - By Shape
    - All Window Inspiration
  - - Window Resources
    - Tips & Advice
    - Window Replacement
    - Window Before & After Projects
    - Window Ratings & Reviews
    - Window Features & Options
    - Window DIY
- Get Started
- Doors
- - Patio Doors
  - Shop Online or by Appointment
    Hinged or French Patio Doors
    1 or 2 doors that swing in or out.
    Shop
    Learn
    Sliding Patio Doors
    Panels of glass that slide open horizontally.
    Shop
    Learn
  - Available by Appointment Only
    Bifold Patio Door
    Expansive panels of glass that fold like an accordion.
    Shop
    Learn
    Multi-Slide Patio Door
    3 or more panels that glide open horizontally and stack.
    Shop
    Learn
  - Shop Parts
    Replacement Parts
    Shop
  - Shop All Patio Doors
  - - - Patio Door Inspiration
      - By Color
      - By Style
      - By Room
      - All Patio Door Inspiration
    - - Patio Door Resources
      - Patio Door Tips & Advice
      - Patio Door Replacement
      - Patio Door Before & After
      - Patio Door Ratings & Reviews
      - Patio Door Features & Options
      - Patio Door DIY
  - Get Started
    - Start Your Patio Door Education
    - 2025 Window & Door Design Trends
- - Front Doors
  - Shop Online or By Appointment
    Fiberglass Door with Glass
    Shop
    Learn
    Solid Fiberglass Door
    Shop
    Learn
  - Available by Appointment Only
    Wood Door with Glass
    Learn
    Solid Steel
    Shop
    Learn
  - Shop Parts
    Replacement Parts
    Shop
  - Shop All Front Doors
  - - - Shop By Material
      - Wood
      - Fiberglass
      - Steel
  - - - Front Door Inspiration
      - By Color
      - By Style
    - - Front Door Resources
      - Front Door Tips & Advice
      - Front Door Replacement
      - Front Door Before & After
      - Front Door Features & Options
      - Front Door DIY
  - Get Started
    - Start Your Front Door Education
    - 2025 Window & Door Design Trends
- Storm Doors
Where to Buy
- For Pros
- For Professionals
- Plan Your Project
- Tools & Resources
- - Product Downloads
    Find product design and performance information, BIM files and architectural specifications as you explore our windows, patio doors and entry doors.
  - Commercial Projects
    See our commercial capabilities in new construction and remodel case studies. We offer a variety of windows and doors to meet your high-performance standards.
    Commercial Projects
    Residential Projects
Free Consultation

Home
Professionals
Installation Instructions
Door Installation
Patio Doors
Bifold Patio Door Installation Instructions

large bifold door opening between the first and second panels from the interior of the home

large bifold door opening between the first and second panels from the interior of the home

Bifold Patio Door Installation Instructions

Let us help simplify installation of a wood/clad bifold patio door from Pella®. Download our installation guides for step-by-step instructions on how to install a contemporary or traditional bifold patio door with a simplified knock-down frame assembly.

Bifold Patio Door Knock-Down Frame Assembly and Installation

A bifold patio door frame is assembled and then installed into the opening, followed by installation of the panels and hardware.

Instructions

description Aluminum-Clad Exterior Bifold Patio Door

description Old Frame Assembly, Current Panel Installation

description Pella 250 Series Premium Bifold Door Installation Instructions

slideshow Pella 250 Series Premium Bifold Door Installation Video

slideshow Pella 250 Series Premium Bifold Door Frame Assembly Video

Helpful Resources

Pella Contractor Programengineering
Pella Contractor Program
Become a Pella Certified Contractor® and let us help bolster your business.
Support Centercontact_support
Support Center
Contact us if you have questions about windows, patio doors or entry doors.
Installation Guidesbuild
Installation Guides
Find everything you need in one packet for your construction type.
Product Warrantiesdescription
Product Warranties
Always read the Pella warranty before purchasing or installing a Pella® product.