Perfection R546 (?) Ceramic heater radiant brick insert 6 7/8" tall 3 1/4" wide

Description

This may be for a Perfection stove, radiant R546.  It is 6 7/8" tall and about an inch shorter in the back, 3 1/4" wide and 2 1/2" thick.  It is vented on the sides and a very large vent on the top.  The old store had marked these 519, but I can't find any radiants with that number in catalogs...found a match to 546 on another website.  Also could be Peerless, and I've enclosed a photo of a Peerless that looks like it has similar radiants in it.
Measurements from one radiant to the next can vary slightly, as these are molded and fired ceramic; and they sometimes have slight flaws or chips which do not affect the use.
Price is for each one, but shipping for each additional one ordered reflects an economical combined shipping cost.
This item came from the liquidation of an old hardware store, and is new old stock.  However, it may have stock number markings on the radiant, from the store.   Please look at the photos carefully to be sure this is exactly what you need.
Please ask if you need more information, and thanks for looking.
Most of my items are pre-owned, usually from estate sales, so I try to describe them accurately and show flaws in the pictures.  Any props in the picture, such as easels, ruler, or backdrops are not included.
Please contact me if you have any issues with your purchase and I will do my best to resolve it.
Thank you for looking!