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[title] Plastic Bag - Easy to Obtain Disposable
[* black] Bag needs to be large enough and well sealed. Many readily available polyethylene bags are usable.
[* green] Adequate seal and gas flow are readily readily monitored by bag's positive pressure inflation.
[* yellow] View window is easily added to any bag using packing tape and a piece of transparent plastic sheeting such as laser print film or scavenged mask visors.
[* icon_note] Because HALO uses a large volume, compliant bag, wearer can take full size breaths. As a positive pressure system, wearer is also spared the work of pulling air through a filter.
[* icon_note] These clear covers are more stronger and more optically clear than laser transparency sheets. https://www.amazon.com/gp/product/B07KZKQBZ5