OASITek Screen Overflow Box

Overview

The OASITek Screen Overflow Box is designed to prepare the end of your underdeck gutter for a clean, professional screen enclosure while also providing easier access to the gutter system for inspection.

A traditional K-style gutter has a curved, decorative profile that can make it difficult to neatly install screen framing around the ends. The Screen Overflow Box attaches to the end of the OASITek gutter and creates a square, flat-sided termination point, making it much easier to install screen enclosure extrusions around the gutter area.

The box also includes an integrated overflow flap that can be lifted to quickly inspect the inside of the underdeck gutter without removing screen framing or other components.

Your downspout connects directly to the Screen Overflow Box, allowing it to become an integrated part of the OASITek drainage system.

Made from the same durable aluminum as the OASITek Underdeck System, the Screen Overflow Box is designed to provide a clean, coordinated appearance and long-term outdoor performance.

Why You'll Love It

✔ Makes Screen Installation Easier
Creates a square, flat surface at the end of the gutter, making it much easier to install screen enclosure extrusions than working around the profile of a traditional K-style gutter.

✔ Designed for Current or Future Screen Enclosures
Install it when your OASITek gutter is originally installed so your system is prepared whether you're adding screens immediately or sometime in the future.

✔ Easy Gutter Inspection
The integrated overflow flap lifts to provide convenient visual access to the inside of your underdeck gutter.

✔ Built-In Overflow Protection
The overflow flap provides an additional outlet if water ever needs an alternate path from the gutter.

✔ Integrated Downspout Connection
The downspout attaches directly to the Screen Overflow Box for a clean, organized drainage connection.

✔ Matches Your OASITek System
Constructed from the same aluminum material used throughout the OASITek Underdeck System for durability and a consistent finished appearance.

What's Included

• OASITek Screen Overflow Box

• Integrated overflow/access flap

• Overflow box cover

• 6 color-matched stainless-steel screws for mounting the cover and downspout

• Double-sided transition fitting for 5" K-style gutter

Helpful Notes

Install During Initial Gutter Installation
The Screen Overflow Box is designed to integrate directly with the OASITek gutter and should be installed when the gutter is originally installed.

Planning to Add Screens Later?
Even if you're not installing a screen enclosure today, we recommend adding the Screen Overflow Box during your initial OASITek installation if you think you may screen the space in the future.

Designed to Simplify Screen Framing
The box converts the end of the K-style gutter into a more square, flat-sided area that is easier to frame around with screen enclosure extrusions.

Provides Gutter Access
Lift the overflow flap to visually inspect the inside of the gutter without having to disturb your screen enclosure.

Downspout Attaches to the Box
Your OASITek downspout connects directly to the Screen Overflow Box as part of the completed drainage system.

Order for Each Required Gutter End
The number of Screen Overflow Boxes needed will depend on your gutter layout and where downspouts and screen enclosure framing will be located.