Automatic flush bolt STEP 22

– adapted for aluminium doors

STEP 22 is an automatic flush bolt for double doors where two door leaves are closed against each other. Equipped with STEP’s unique Preload technology that allows the door to open even if subjected to high pressure.

Automatic flush bolts are used on double doors that automatically lock when the two door leaves are closed against each other. The door leaf that closes first is called the passive door and the other is called the active door leaf.

Function

The automatic flush bolts are usually mounted on the upper and lower part of the passive door leaf, where you want the passive door leaf to lock automatically when the active door leaf is closed. The active door leaf is then automatically locked with a regular lock on the passive door leaf.

In the same way, automatic flush bolts are designed to automatically unlock the passive door leaf each time the active door leaf is opened.

STEP 22 is designed for aluminium doors.

STEP’s unique Preload technology

A common problem is that a door is subjected to pressure, for example, because the door is a little skew or that gravel or snow has gathered at the doorstep. STEP 22 is equipped with STEP’s unique Preload technology that allows the door to unlock even if subjected to pressure.

Seals and pressure differences – The Preload function enables the door to always be unlocked.
Door automation – The Preload function combined with rapid unlocking means that the door opens quickly and without risk of becoming stuck.
Evacuation door – The Preload function ensures that the passive door leaf can open, despite pressure against the door by crowds, seals, pressure differences or warped doors.

Strike plates as accessories

We offer two types accessories for this product: a sliding plate ST953-2 and a strike plate ST953-1. Both are included in the packaging when purchasing the STEP 22 and can also be purchased separately.

Swedish premium quality

All our products are developed and manufactured by us, in Sweden. Maximum functionality and reliability are fundamental product features we never compromise on. By choosing STEP, you are selecting premium-quality products designed to deliver exceptional reliability for the long term.

Designed for demanding environments

Some environments place particularly high demands on durability and performance. These include door systems exposed to extreme weather changes, heavy wear and tear, or challenging conditions such as salt, moisture, or high preload pressure. Thanks to their functionality and reliability, our products are built to withstand even the toughest environments. Choose STEP – When it has to work.