A mother and daughter sitting on a couch in the living room with vaulted ceilings and Infinity by Marvin windows and doors in an Ohio home.

Window Fall Prevention

Enhanced window features

Window safety is essential for protecting your loved ones, and Infinity by Marvin offers two distinct window fall prevention device solutions to meet your specific needs and style preferences — Window Opening Control Devices (WOCDs) and Sash Limiters.

Why choose Window Opening Control Devices

Our WOCDs limit the window openings to less than 4 inches and include an operable release mechanism which allows the sash to be opened for emergency egress. The WOCD will automatically reset when the window is fully closed again. These devices may prevent potential falls for children five years old and younger.

Protection
with style

Designed to provide peace of mind without compromising the elegant look of your Infinity windows, our WOCDs offer protection for the whole family.

Seamless
integration

Thoughtfully integrated WOCDs blend into your window design with factory-applied precision without detracting from the beauty and functionality of the window.

Effortless
operation

The WOCD release mechanism can be operated to allow for emergency escape when needed, and will automatically reset when windows are fully closed, ensuring consistent protection without manual reactivation.

Code
compliance

Our WOCDs meet ASTM F2090-25 requirements for use on emergency escape and egress window openings. Verify specific compliance requirements with local building and fire codes.

A perfect match for your style

Enhance your home's safety with our window fall prevention devices, while also maintaining the beauty and functionality of your windows with precision-engineered WOCDs. Designed to complement our line of windows, Infinity WOCDs complete your replacement window project with fall prevention features and a beautiful, cohesive look.

Available for double hung, casement, and slider windows, our WOCDs come in finishes that perfectly complement your window selection.

Infinity Double Hung

The double hung WOCDs sit on both sides of the top sash. When you open the window, it automatically stops at less than 4 inches. Need to open it wider? Just press the orange-marked levers and you can fully open your window. Close it, and the double hung WOCDs reset on their own.

Available finishes: White, Beige, and Black

Infinity Slider

This WOCD stops your slider window to a less than 4-inch opening. When you need emergency escape and rescue (egress), just press the red lever to reveal the black lever underneath, then slide it down. Your window can now open fully, and when you close it, the WOCD will automatically reset.

Available finishes: White, Sierra, Satin Taupe, Oil Rubbed Bronze, and Matte Black

Infinity Casement

A casement WOCD system uses a tether cable with a catch that limits opening to less than 4 inches. When you want to open the window completely for egress, push the red button and slide the lever. When you fully close the window, the casement WOCD will automatically reset.

Available finishes: White, Sierra, Satin Taupe, Oil Rubbed Bronze, and Matte Black

Note: Because of the metals used in the casement window opening control device, this product is not recommended on windows installed within one mile of salt water.

Close up of an Infinity sash limiter on a white casement window.

Sash limiters

Sash limiters are devices that restrict the opening distance for Infinity Awning and Casement windows to up to 4 inches. These window safety devices are a way to meet your local building codes for windows that are not required for emergency escape and egress.

Protection for your home

Meeting ASTM F2090-25 standards

Restricts the size of the open area of the window so that it is too small for a young child to fall through

Allows the window opening to be set at a predetermined position (up to 4 inches)

Automatically resets when the window sash is closed

Requires two independent actions to prevent accidental release of window safety lock

Factory-applied WOCDs are available from Infinity by Marvin

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All Infinity sash limiters and window safety locks are covered under our Limited Lifetime Warranty.

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