Thread: 1955 rca what crt?
View Single Post
  #4  
Old 09-11-2010, 01:24 AM
Don Lindsly Don Lindsly is offline
Ex-Philco
  
Join Date: Jul 2005
Location: Colorado
Posts: 450
A 21ZP4 or 21YP4 will not sub for a 21AUP4. All three are 21 in, 70 degree, but the bulbs are different shapes and the 21Z/Y have slightly smaller screen sizes. Don
Reply With Quote