Delmoar Fixed Window Safety Guard 14”x 38” *2 Pack Adjustable Width Prevents Accidental Falls, Non-Egress, Tamper Resistant Screws Included, White

Why I installed this window guard

I needed a simple, dependable way to stop curious little hands from pressing on window screens and to add a basic barrier at a couple of second-floor double-hung windows. After trying a few DIY approaches that looked clunky or felt flimsy, I installed the Delmoar window safety guard—the 14-by-38-inch, two-pack version—and have been using it long enough to get a clear read on its strengths and trade-offs.

This is a fixed, non-egress guard designed for vertical windows with openings between 21 and 38 inches wide. It mounts to the interior casing, has a 3.8-inch bar spacing to reduce fall risk, and uses tamper-resistant screws. It’s not intended for horizontal sliders or casement-style windows, and it should not be used where an emergency escape route is required.

Installation experience

Setup was refreshingly straightforward. I measured the interior casing opening twice, set the guard on a soft surface, and adjusted the width to fit one window at around 32 inches and the other at roughly 28 inches. The slotted side rails make the width adjustment simple; it’s essentially a matter of aligning the bars and tightening the fasteners to lock the size.

From there, I held the guard against the casing, centered it, checked level, and marked the screw holes. Pre-drilling small pilot holes made a difference—less chance of splitting the casing and a cleaner, more controlled drive. The included tamper-resistant screws bite well into wood; I’d plan on a compatible security Torx driver bit. If your windows are set in metal or masonry, you’ll need appropriate anchors, as the included screws are sized for wood.

A couple of practical tips:
- A second set of hands helps steady the guard while you set the first two screws. It’s light enough to handle solo but long enough that it can sag if you’re reaching.
- Putting down a piece of painter’s tape where you’ll mark and drill keeps the finish on the casing from chipping.
- Dry-fit each guard fully expanded and fully compressed before mounting to understand its movement range within your specific trim.

Total time per window was about 20 minutes with pilot holes and a careful layout. Everything seated flush, and there was no need to slot or widen any holes.

Build quality and finish

The frame feels sturdier than I expected at this price point. The bars don’t flex noticeably under a firm shove, and the side rails hold alignment when you torque down the set screws. Edges were smooth—no burrs or sharp corners—and the finish on my white units was even and clean, with no thin spots or drips.

The 3.8-inch spacing lands in the sweet spot for child safety (below the commonly recommended 4 inches), which is a big part of why I chose this style. The spacing is consistent across the width; I checked with calipers out of curiosity and found no meaningful variation.

Once installed, there’s no rattle. Opening and closing the window behind it doesn’t set up any vibration or buzz, which I appreciate in a quiet room. The bars sit close enough to feel secure but far enough from the sash that you can still operate the window and screen without knuckle-busting.

Fit, adjustability, and stacking

This specific size is 14 inches tall and adjustable in width from 21 to 38 inches, so it covers the lower portion of most standard double-hung windows. For taller openings or window seats where you want more vertical coverage, you can stack units. I tested a stacked setup on a workshop window and found it straightforward as long as you plan your spacing carefully. I butted the units with a minimal gap to avoid creating a climbable foothold or a larger-than-intended opening between them. If you go this route, lay both pieces on a flat surface, align them, and pre-mark your pilot holes so everything lands level on the wall.

A small but nice detail: the mounting flanges give you enough surface area to hit solid wood even on narrower casings. If you’ve got unusually thin or ornate trim, check that you can still catch good substrate; you may need to shim behind the flanges or slightly adjust the vertical placement to find meat.

One important limitation: this guard is for vertical windows only. Don’t try to force it onto a horizontal slider, and don’t assume it will behave on a crank-out casement. The geometry and clearances just aren’t right for those.

Day-to-day use

In practice, the guard does exactly what I wanted: it prevents a child (or a medium dog) from pushing through a screen or leaning out dangerously, while still letting me open the sash for airflow. The bars are close enough that little arms don’t easily fit through, and the tamper-resistant hardware means a screwdriver left on a windowsill won’t undo your work.

Aesthetically, the white finish blends into typical white trim better than I expected. It reads as part of the window rather than an add-on. From the exterior, it’s visible but not loud; if you’re aiming for subtlety, white was the right choice for my space.

Cleaning is painless. A microfiber cloth and mild soap take care of dust on the bars, and because the guard sits a couple of inches off the sash, I can still pop the screen and wipe the glass inside without removing the guard.

Safety and code considerations

Two critical points:
- Non-egress: This guard is fixed. It is not an emergency release device and is not appropriate for bedrooms or any location where it would block required emergency egress. Know your local code and install accordingly.
- Mounting integrity: The guard is only as strong as what you mount it into. Secure it to solid wood, not just soft trim. If you have doubts about what’s behind the casing, use a stud finder or remove a small section of trim to confirm. For masonry or metal, use proper anchors and fasteners rated for your substrate.

It’s also worth noting that while this adds a layer of deterrence, it is not a rated security bar. For burglary resistance, look for products with specific security ratings and quick-release mechanisms where code requires them.

What I’d improve

• Provide the matching security driver bit in the box. Many homeowners won’t have a tamper-resistant Torx on hand.
• A simple paper template or a small diagram showing suggested mounting heights and stack spacing would make layout even more foolproof, especially for first-time installers.
• Offering a matte black finish option would help it disappear on darker trim. The manufacturer lists multiple sizes, but finish options vary; white worked perfectly for me.

Who it’s for

• Parents, caregivers, and pet owners who want a discrete, fixed barrier on vertical windows to reduce fall risk.
• Homeowners looking for a low-profile, interior-mounted guard that maintains airflow without introducing rattles or complicated release mechanisms.
• Anyone outfitting multiple windows; the two-pack is convenient for symmetrical rooms or for stacking.

Who should look elsewhere:
- Those needing a code-compliant egress solution or quick-release security bars for sleeping areas.
- Homes with only casement or horizontal sliding windows.
- Renters who can’t drive screws into window casings or who need a truly tool-free, removable device.

The bottom line

The Delmoar window safety guard does the essentials well: it’s sturdy, easy to install on vertical windows, visually unobtrusive in white, and sized smartly for the lower half of a standard double-hung. The 3.8-inch bar spacing and tamper-resistant hardware make it a sensible choice for child and pet safety, and the adjustable width keeps it versatile across a range of openings. Stacking adds flexibility for taller areas, provided you take care with spacing and hit solid mounting surfaces.

I recommend this tool. It’s a practical, well-built guard that solves a specific safety problem without turning your window into an eyesore. Just be mindful of the non-egress limitation and substrate you’re mounting into, and have the right driver bit on hand. If you need a fixed, interior solution for vertical windows, this one strikes the right balance of simplicity, strength, and day-to-day usability.