The Mulcherizer has a stationary expanded metal grid mounted above the blade to further assist in grinding leaves. Never saw one in person because I like things "simple" as possible under the deck! (Sounds like any moisture in the cut material would be prone to plugging to me?) Below are a couple of views of a well used Ninja blade from my '96 Snapper. Notice one set of blades has the tips turned down with a sharpened end. BTW, it has to be used with the discharge plugged for any decent performance.
The design of the blade gives very little "lift", but concentrates on keeping the clippings under the deck longer and providing horizontal PLUS vertical cutting edges. Works GOOOOOD! I did a comparison last year between the Ninja and an Oregon "Gator" mulching blade (don't' know availability in The Land of the Black Forest
) and the Ninja won hands down on lawn covered with Autumn maple and oak leaves.
