Patent ID: 7784522

Claim:
A slat for use with a rolling shutter, the slat having a first end and second end and a cross-section comprising: a body; a first engaging track connected with the body and including a hook; and a first receptacle track connected with the body and including a lip and a guard spaced apart from the lip and defining with the lip an opening into a first articulation space configured to articulatably retain a second engaging track of a second identical slat and further including a receptacle opening only into the articulation space through a gap, the gap being formed between two shoulders on the receptacle track, and wherein the gap cannot accommodate the second engaging track, the receptacle configured to receive an alignment device or a retention device for engaging the first and second slats with the shutter casing, wherein the first engaging track is configured to be articulatably retained by a second articulation space of second receptacle track of a third slat.