Will a magnetic screen door work on an aluminum sliding track?

Yes — Fillis sliding-track kits use surface-mount strips that adhere to the door frame, not the recessed metal track. The magnets close inside the screen mesh itself, so the rough aluminum runner underneath has no effect on the seal.

What if my opening is between 48" and 72" wide?

Choose the next size up and let the extra mesh fold against the frame. Magnetic screens are designed to be slightly oversized — they trim with scissors if needed. Never undersize: a screen that's narrower than the opening leaves a permanent gap on one side.

Can I leave the magnetic screen up all year, or do I have to remove it for winter?

Most U.S. homeowners take it down between November and March. The hook-and-loop adhesive loosens under repeated freeze-thaw cycles, and snow load can stretch the mesh. Storage takes 30 seconds — just unstick the top, roll, and bag.

Will my dog or cat push through the magnets?

Pets adapt within 2-3 days. The 26-magnet closure on Fillis screens snaps shut in under a second, so even running dogs can't hold it open accidentally. Cats figure out the seam faster than dogs. Heavy breeds (80+ lbs) sometimes need the reinforced PET mesh — see our pet-mesh guide below.

Does Fillis ship to Alaska, Hawaii, or APO addresses?

Yes. Shipping is free to the lower 48 on orders over $35. AK, HI, and APO/FPO addresses add a flat $9 surcharge calculated at checkout. Delivery is 5-9 business days from a U.S. warehouse — no overseas drop-ship.

A black magnetic mesh screen door covering a wide sliding patio doorway

Magnetic Screen Door for Sliding Doors: Complete Sizing Guide (2026)

May 26, 2026

Last updated: May 26, 2026

If you've ever stretched a standard magnetic screen across a sliding patio door and watched it sag, gap, or fall off after one breezy afternoon — you're not alone. Patio sliders are the most common reason magnetic screens fail, and it's almost always a sizing problem, not a product problem.

This guide walks through what actually fits an American sliding door, how to measure correctly, and which Fillis sizes match the two openings you'll find in 90% of U.S. homes.

Why a Standard Magnetic Screen Won't Work on a Slider

A normal magnetic screen door is designed for a swing door — a hinged opening you walk straight through. The frame is plumb, the opening is one fixed rectangle, and the screen attaches to a flat wood or vinyl casing.

A sliding glass door is none of those things:

The opening width changes depending on whether one or both panels are open. A standard 72-inch slider opens to roughly 36 inches when one panel slides — but the full opening (both panels off-track) is 72.
The track is recessed, so standard adhesive strips have nothing flat to grip on the bottom.
The frame extends beyond the glass, meaning your real mounting surface is the surrounding wall casing, not the door itself.

The fix: use a screen kit designed for sliders, with surface-mount strips that bypass the track entirely and attach to the wall framing.

How to Measure Your Sliding Door Opening

Forget the door — measure the opening. Five numbers:

Width (frame-to-frame, inside the casing). Measure top, middle, and bottom. Use the smallest number.
Height (top of opening to floor or sill). Same — top to bottom, use the smallest.
Casing depth. The flat surface around the opening where the screen will adhere. You need at least 1 inch of flat material.
Slide direction. Which panel moves? Left or right? This decides which side gets reinforced magnet strips.
Outside obstacles. Light fixtures, planters, or rails within 4 inches of the opening will push the screen out of plumb.

Write the numbers on the door frame in pencil. You'll need them again at install.

The Two Sizes That Actually Fit American Sliders

U.S. patio sliders come in about a dozen widths, but two sizes cover the vast majority:

72 × 80 inches — the standard patio slider

This is the dimension Home Depot, Lowes, Andersen, and Pella have shipped as the default U.S. patio slider since the 1980s. If your slider has two full-height glass panels and a single brass-finish handle, it's almost certainly a 72 × 80.

→ See the Fillis 72×80 Sliding-Track Kit

48 × 80 inches — narrow sliders & side patios

Common in apartments, side entries, and older homes built before the 80s. Also frequent in condos where the patio opening is narrower than a full sliding wall.

→ See the Fillis 48×80 Sliding-Track Kit

What if I'm between sizes?

Always size up. A 72-inch screen on a 68-inch opening folds the extra inches against the casing and trims with scissors. A 48-inch screen on a 52-inch opening leaves a 4-inch gap that mosquitoes treat as a front door.

Installation Tips (No Tools Required)

A correctly-sized Fillis sliding kit installs in 8–12 minutes. The four common mistakes:

Skipping the alcohol wipe. The included adhesive strips need a clean, oil-free surface. One wipe with rubbing alcohol = 3× the holding strength.
Installing in direct sunlight on a 90°+ day. The adhesive cures too fast and won't pull a second time if you misalign. Install in shade or in the morning.
Pulling the strips taut before the adhesive sets. Apply the top first, smooth down, then bottom — never side-to-side.
Forgetting the wind catch at the bottom. The bottom edge needs a weighted strip (included) so a gust doesn't bow the screen inward.

Full step-by-step photos: Fillis Installation Guide

Pets, Kids, and Mesh Choice

If you have a dog over 40 pounds or a cat that scratches mesh, the standard fiberglass weave on most magnetic screens will tear within a season. The fix is PET (polyethylene terephthalate) mesh — the same family of polymer used in seatbelts.

We did a head-to-head on this last week: PET mesh vs fiberglass magnetic screen door comparison

For multi-pet households or families with toddlers, the reversible 72×80 PET model opens both directions and survives claws.

Common Patio Scenarios

Pet-friendly setup — see our pet-friendly screen door guide for breed-specific recommendations.
Summer patio entertaining — the patio buyer's guide covers airflow, mosquito hours, and party-friendly setups.
2026 trend roundup — what's changed in screen-door design this year.

FAQ

Will a magnetic screen door work on an aluminum sliding track?: Yes — Fillis sliding-track kits use surface-mount strips that adhere to the door frame, not the recessed metal track. The magnets close inside the screen mesh itself, so the rough aluminum runner underneath has no effect on the seal.
What if my opening is between 48" and 72" wide?: Choose the next size up and let the extra mesh fold against the frame. Magnetic screens are designed to be slightly oversized — they trim with scissors if needed. Never undersize: a screen that's narrower than the opening leaves a permanent gap on one side.
Can I leave the magnetic screen up all year, or do I have to remove it for winter?: Most U.S. homeowners take it down between November and March. The hook-and-loop adhesive loosens under repeated freeze-thaw cycles, and snow load can stretch the mesh. Storage takes 30 seconds — just unstick the top, roll, and bag.
Will my dog or cat push through the magnets?: Pets adapt within 2-3 days. The 26-magnet closure on Fillis screens snaps shut in under a second, so even running dogs can't hold it open accidentally. Cats figure out the seam faster than dogs. Heavy breeds (80+ lbs) sometimes need the reinforced PET mesh — see our pet-mesh guide below.
Does Fillis ship to Alaska, Hawaii, or APO addresses?: Yes. Shipping is free to the lower 48 on orders over $35. AK, HI, and APO/FPO addresses add a flat $9 surcharge calculated at checkout. Delivery is 5-9 business days from a U.S. warehouse — no overseas drop-ship.

Ready to fix your slider? Browse the full Fillis range — every kit ships free in the lower 48, comes with installation tools, and is backed by a 30-day no-questions return.

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