Abstract: A method of making a filter by thermoforming a plurality of individual packages each of the plurality of packages having a first portion hingably attached to a second portion and placing a media portion in each of the plurality of packages and dispensing a curable product in each of the plurality of individual packages and curing the curable product such that a portion of the media is now fixedly secured to the curable product.

Abstract: A collapsible sled for transporting items having a front section and a rear section pivotally connected to each other so as to be positioned in operable and collapsible positions. The sled includes a runners, each of which includes a V-shaped blade and a pawl and ratchet assembly for automatically locking each runner into an operable position relative to the front and rear sections; a snap lock for locking the front and rear sections into the collapsible position; and a slidable lock for locking the runners to the front and rear sections when the sled is in the collapsible position.