deck plates

how ya'll are?
 I was wanting to put a smasll deck plate in the rear of my OK -P13 and remember seeing a similar link on the NCKA site.
 Anyone have a favorite source for these?
 Besides storage I want to wash out the inside of my boat, and no access makes this a bitch.
 Thanks to all.
 

West Marine carries them.  I think a 4" model is the one you want for the rear top deck.

Here's one for $10 ...  http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/263655/0/0/deck%20plates/All_2/mode+matchallpartial/0/0

-Allen

Thanks POLEPOLE,
 Big store! Where I want to put the deck plate is the access panel molded into the prowler for the rudder system on the back wall of the tank well. Nice and flat but the 8" deck plate is too big by 1/2" as the rim seal hits the bottom of the boat, so a 6" is the way to go.