Try this link Clyde. It is an FAQ on the ecore.quote:
Originally posted by Clyde65:
I just got back from Walmart after looking over an ST3387A, and my first impression is how small it is. The PF47 is another 1/3 longer. The E-core inside looked cheesy. Please understand that I don't intend to bash this filter or offend anyone, I'm just giving you my honest unscensored first impressions. As always I could be wrong since I'm somewhat human.
http://www.servicechamp.com/prod_res_docs/Ecore FAQ's Sheet.pdf
