The T44S type with adjustable closing delay keeps the door open for a maximum of 45 seconds and then opens it. This makes passing the door easier with bulky objects, bicycles or prams.
TJSS T44AA – with adjustable backcheck function
If the door closer is not only meant to close the door but also to protect the wall and door in the event of hard knocks, use of the T44 AA is recommended which features adjustable and an increased backcheck function.