Just a small detail gentlemen (and ladies).
You are all doing great marketing job for the La Marzocco espresso machine manufacturing company, and the Australian importers of said brand, and building brand awareness for them by continually mentioning the name.....in a situation I think, of misunderstanding.
Mostly, these coffee filters, as mentioned frequently enough in topics in this and other forums, and described as being "LM" filters.....are generic large coffee filters as supplied on most commonly available commercial coffee machines in this market.
They are simply a common, pressed stainless steel, "deep" or "large", "18 gram" generic commercial coffee filter, and are interchangeable through many brand and model machines.
Please, no offence intended, just a pertinent detail correction and yes, 18 gram filters are the best for the style of coffee we generally roast, blend and brew over here.