The grille closes the opening of the gate and lifted by using special equipment.Most often made of hard wood with iron reinforcements, sometimes in the form of spikes or iron with small holes.The vertical movement of the portcullis was stabilized by the guides in the door opening.
portcullis of Water Gate in Bystrzyca Kłodzka, Poland, photo: J. Halicki, source Wikimedia Commons
portcullis at the Harburg castle, Germany, photo from the Wikimedia Commons
portcullis at the entrance to the Middle Castle in Malbork, Poland
portcullis at Stirling Castle, Scotland, photo: D.Monniaux, Wikimedia Commons
