Flat Top grill for XL

SmokeyPitt

If you are not wanting to deal with grease dripping into the egg then the Kettle-Q is another option. It is only 14 inches so not really sized for the XL. 

14 in. Round Stainless Steel Griddle for Kamado and Charcoal Grills (homedepot.com)

They have other square options that might fit on the XL. I suck at geometry so I would just get a piece of cardboard and cut it to the dimensions to see if the square or rectangle fits inside the egg. 
Professional Series 14 in. Stainless Steel BBQ Griddle (homedepot.com)

loco_engr

Herky said:

I have a pizza kettle with one of these that doubles as a griddle on the egg.
https://www.hunsakersmokers.com/collections/griddles

Thank You for the url . . . I ordered the 22.5"

Tspud1

2BAMBAM4 said:

loco_engr said:

There are 2 metal fabricators relatively close by from my location.
What metal would be the best choice and how thick?

@loco_engr
Get the same steel used for a flat top griddle.   I think it's SS304.. not sure and being lazy.  I just bought the Misen Oven Steel (food grade) you can bake, blacken, etc.   Be sure to season. 

there are no commercial griddles made from type 304 stainless. Almost all are hot rolled mild steel with a polish.

2BAMBAM4

@loco_engr

The Misen Oven Steel is indestructible, and its A36 carbon steel.
Would be very expensive in SS304 in that thickness.

Mine's been on order since the kickstarter  waiting for the delivery...

loco_engr

@2BAMBAM4  received mine yesterday