A contractor from Simi Valley, CA 93065, USA says:
April 24, 2017
Need snap in glazing bead for 36 x 36" window
Paul from SWISCO responded:
April 27, 2017
I believe your snap in top has been squeeze to give you a longer leg compared to our 55-181. That said, I think our 55-181 can still work with you. Just compare our dimensions to yours to confirm.