Unless you're using the bottom of the barrel cheap receptacles, a 15A and a 20A recept are internally the same... (ie. P&S BR15/BR20, Hubbell CR15/20, etc.)

PS... The outlet above is likely older than the invention of the CO/ALR type device. It looks like the old Rodale outlets from the early 60's.

[This message has been edited by Lostazhell (edited 12-02-2005).]