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use your own judgement and do not take anything I say as being correct.
from what i remember the difuser was made out of stainless mesh...been a while!at least the general right direction...http://www.twpinc.com/twpinc/products/TWPCAT_12at least shows whats out there and mesh count. 316 ss is rated at hi temp...he he ... must be a hot bite some where... i just saw jigm'up running across the ice like his arsse was on fire...OH WAIT IT IS!!!!
SD...huh? Lucky dog....you got all the jumbo perch and walleye a man could ask for!