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Zip-Up®

SKU: DDZ-Whit12Main

Zip-Up Underdeck® Drainage System Main Rail

Zip-Up Underdeck® Drainage System Main Rail

Regular price $45.75 USD
Regular price Sale price $45.75 USD
Save Liquid error (snippets/price line 86): Computation results in '-Infinity'% Call to Order: 1-877-232-3915
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ZipUP UnderDeck® Main Rail – The Backbone of a Seamless Ceiling System

The ZipUP UnderDeck® Main Rail is the central support piece in the ZipUP UnderDeck® Drainage System. Designed to secure and align ceiling panels, this structural component provides a clean, level framework that helps create a watertight under-deck ceiling. Whether you're enclosing a patio or creating dry storage space, the Main Rail ensures everything stays in place and performs reliably.


Core Benefits

  • Essential Support: Anchors the entire panel system, keeping ceiling panels firmly aligned and secure.

  • Easy Snap-In Design: Allows panels to lock into place quickly for a fast, efficient installation.

  • Moisture Management: Works with the overall system to create a pitched surface that channels water away.

  • Durable Build: Made from tough PVC for long-lasting performance in outdoor conditions.

  • Low Profile Appearance: Helps create a clean, streamlined ceiling under your deck.


Product Specifications

Feature Description
Available Lengths 12 feet and 16 feet
Material PVC (Polyvinyl Chloride)
Purpose Supports and secures ZipUP® ceiling panels
Installation Attaches to deck joists; panels snap in securely
Water Drainage Used in conjunction with Pitch Rails
Maintenance Weather-resistant; no painting or sealing needed
Color Matches ZipUP® ceiling panel color options

Installation Notes

  • Positioning: Mount perpendicular to joists, spacing according to panel layout.

  • Combines With: Designed to work seamlessly with ZipUP® Panels, Pitch Rails, Wall Trim, and Seam Trim.

  • Versatility: Suitable for both new construction and retrofit deck projects.


The ZipUP UnderDeck® Main Rail is essential for bringing structure and simplicity to your under-deck drainage solution. With two length options and easy installation, it’s a smart, adaptable choice for any covered outdoor space.

Shipping Information

Please call 1.877.232.3915, e-mail or message us online. We will call you to verify your order and to make payment arrangements. We also have several other trucking companies that work with us at a 72% discount which we pass onto you. Orders can be shipped direct to your home or jobsite.  We can also hold orders at your local freight terminal for customer pickup. Small orders are shipped via UPS. We also ship to European and other foreign countries on container load basis. We ship anywhere in the world...please phone or email if you have shipping questions.
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