The Insulclad kit is only applicable to CVR and CVC devices...
Insulclad kits are for doors with concealed rods because instead of having a normal 1-3/4" door, they have an additional 1/4" or 1/2" of insulating material on the inside face of the door. Because of this, the rod has to be extended to reach through that extra material to connect with the device.
With a rim device, they just have to specify the overall thickness to get any extended mounting pack and trim extensions.
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