Batman: Arkham-Asylum: How to Enter Sealed Vents that are High above the Ground

Batman’s latest edition of game is too good but I wish the game could make few things clearer : )

Like I would be quite happy if I knew that in order to reach high Vents in this game, we need to have a gadget called Batclaw.

We will get this device in the Fourth stage (Caves) of the game.

The problem I had was that: in the first few stages, I saw some sealed vents that were high above the floor and there was no way to reach them I wasted quite some time trying to open them but I failed.

I thought we may need to glide or do something special in order to open such vents but nothing worked. I then decided to search on the internet and found that we will get a device later in the game that can be used to reach such vents.

We will first use Batclaw to open the vent and then we can Grapple to that vent to collect trophy or to see what is inside.

At the moment, I am in the second stage of the game and have not yet got this device: so I am wondering if I will be able to explore the vents that I am leaving behind?