Howard is holding up one of the pallets. It is made of wood, felt, and leather. This is the number one reason we are always harping on keeping the wind clean. One small piece of sawdust will lodge in the felt and then the pallet can not seal completely. You now have air leaking wear it isn't supposed to be. This causes noise and irritation to anyone listening.
Once again, this chest is upside down. Normally, a pallet spring holds the pallet closed against gravity. Here the springs and rail have been removed for cleaning.
Cue next slide......
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