Pella Primed Wood or Clad casement roto operator (1967-1993).
Roto operator only. No handle or cover.
Left and right handed.
Split Arm: 6 inch long, bracket on end.
Middle Link: 5 inch, to center of rivets.
Note: Old style Pella designer series had round breather holes. Newer ones were square.
Priced and sold each.How to Change Out Your Pella Roto Operator (Video | Article
This product is similar to or the same as the following part numbers in these brands:
Strybuc Industries: 900-8866