# Vertical Pleated Insect Screen
Source: https://www.fenetresystems.com/en/vertical-pleated-insect-screen/

# Vertical Pleated Insect Screen

The form where the mesh moves up-down on the vertical axis — it eats none of the narrow window’s width since it carries no second profile beside it.

## What Is the Vertical Form?

The vertical pleated insect screen is the window form where the mesh moves on the vertical axis — top to bottom. Closed, the mesh covers the whole opening; opened, it gathers folding to the edge.

On the horizontal arrangement the mesh gathers to one side and wants a side profile. On the vertical form the load-bearing line is at the top — no second profile column forms on either side of the opening.

## Why Advantageous on Narrow Windows?

The centimetres a horizontal casing would eat come out of the narrow window’s net width — the vertical form gives no such loss; the opening width is preserved as it is.

The same axis works on roof and sloped windows too — gravity helps the movement while the tension arrangement holds the mesh at the wanted height.

## Gathering Arrangements

Three gathering styles — the joinery’s reach and form state make the choice.

Gathering arrangements and use cases of the vertical pleated insect screen
Arrangement — Operation — Suited Situation
Top-Gathering — The mesh folds onto the top edge — Standard vertical window
Bottom-Gathering — The mesh folds onto the bottom edge — Railed and sloped joinery
Two-Way — The mesh can gather in both directions — Tall windows with limited reach

## Standout Features

The aspects of the vertical form that make a difference on narrow and sloped openings.

- Up-Down Movement The mesh works on the vertical axis — it wants no room at the sides.
- Width Preservation No side profile column — the narrow window’s net width is preserved.
- Shutter Compatibility On shuttered windows it can be installed in the gap behind the rail.
- Wind Stop The wind stop on the bottom panel keeps the mesh on the guide line.
- Double Option With two panels, wide vertical openings are covered in a single system too.
- Four Seasons No winter removal needed — it waits in the closed position.

## Questions About the Vertical Pleated Insect Screen

Should vertical or horizontal be chosen?

Use decides — on doors the horizontal arrangement is natural; on narrow windows the vertical form is advantageous because it spends no side profile and preserves the net width.

Does the mesh drop on its own?

No. The tension arrangement holds the mesh at every height — gravity helps the movement but does not drop the mesh.

Does it fit a roof window?

Yes. On sloped and roof openings the vertical axis is the natural working direction — measurements are taken to the joinery’s true form.

Does the mesh come off in wind?

The wind stop on the bottom panel keeps the mesh on the guide. On façades taking constant hard wind, the channelled arrangement is evaluated.

The casing series mounting on windows are in the [product catalogue](https://www.fenetresystems.com/en/pleated-insect-screens/); the inside-vs-outside position decision is described on the [installation types page](https://www.fenetresystems.com/en/pleated-insect-screen-installation-types/). The window and opening types the vertical form mounts on are detailed in the [application areas](https://www.fenetresystems.com/en/pleated-insect-screen-application-areas/).

## Send Your Window Measurements

Once net width-height and the joinery form are relayed, a gathering arrangement and profile choice are recommended.

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