This is one of the most widely used profiles by almost every manufacturer in the industry, it comes in gray and black. The standard material is PVC for general use. The 516 profile is also available in Santoprene for heavy use or harsh environments, but is about 2x the cost of PVC. The 516 profiles look very similar to the 012 profile and the 508 profile with the only difference being the width and height of the profile base, so pay close attention to these measurements. The 436 profile also looks similar, its bellows and magnet are centered while the 516’s profile is offset to the side.