Lodge 401 – Lodge 500, includes all Lodges issuing pocket flap, by Lodges numbered five hundred and one thru six hundred. Both closed and current Lodges

OA Lodge Flaps not fully embroidered Type F and can be Twill left (TL) or Twill Right (TR). Twill when viewed from the front, the rows of twill left appear to go up diagonally to the left. Twill right appear to go up diagonally to the right. Also there are Fine (TLS and TRS), Medium (TLM and TRM) and Course (TLR and TRR) rows made in Twill. Catalog Identifiers start with the letter “F” Worn by Order of the Arrow Members of this lodge.

OA Lodge Flaps Type S, includes Chapter, Event and NOAC Flaps and Patches Type S and can be Twill left (TL) or Twill Right (TR). Twill when viewed from the front, the rows of twill left appear to go up diagonally to the left.  Twill right appear to go up diagonally to the right. Also there are Fine (TLS and TRS), Medium (TLM and TRM) and Course (TLR and TRR) rows made in Twill. Catalog Identifiers start with the letter “S” Worn by Order of the Arrow Members of this lodge.

OA Lodge Flaps identify which lodge a scout or scouter is a member. Normally, there is one lodge per council. Also, Lodges are divided into Chapters that are local to a given area within the lodge.