Immunity from prosecution may be granted at the grand jury stage, CPL 190.45, as well as elsewhere in a criminal proceeding, typically at trial. Immunity is covered by article 50 of the Criminal Procedure Law and in article 190, regarding grand jury proceedings.
A louver (American English) or louvre (British English) is a window blind or shutter with horizontal slats that are angled to admit light and air, but to keep out rain and direct sunshine. The angle of the slats may be adjustable, usually in blinds and windows, or fixed.
1 A jib door is a concealed door, whose surface reflects the moldings and finishes of the wall. These were used in historic English houses, mainly as servants' doors.  A pet door (also known as a dog door or cat flap) is an opening in a door to allow pets to enter and exit without the main door being opened.