I don't know what's available in the Canadian market, but in Australia there is a wide variety of woven wire mesh suppliers for the Architectural and Heritage Building industries. Most will have something close, but if not will make a mesh on order (in steel, stainless, copper, brass, etc). Not just your Carrier screen, but also CMP radiator grilles, etc.
http://www.locker.com.au/architectural/woven-wire.html