Walmart offers Homestyles Regent PVC Folding Door Fits 36" x 80" Oak Woodgrain Color for $29.98 (reg $39.85). Free shipping on orders over $35.

Product Description:
The Homestyle Regent 36-inch by 80-inch Vinyl Accordion Door, can trims easily to any height and has reversible handing, allowing the option of installing two of these doors as a double door. The durable, maintenance-free vinyl panels have flexible vinyl hinges. The door comes with track, hardware and easy-to-follow installation instructions.
Homestyle Regent PVC Folding Door Fits 36" x 80" Oak Woodgrain Color

• Crafted of durable vinyl panels with flexible vinyl hinges
• Accordion door design is ideal for tight spaces
• Fits openings from 24"-36"W x 80"H
• Material content: PVC
• Dimensions: 80" x 36"
• Model# HSR3680K