Water-resistant clamshell carton

A carton for receiving a coil of filamentary material and a payout tube, the carton comprising:

• a clamshell having a plurality of panels, the panels collectively defining a coil-receiving enclosure, the clamshell having an open side;
• a cover for selectably closing said open side of the clamshell;
• the clamshell having a payout panel which defines an entry edge and an aperture remote from the entry edge, the aperture being sized to permit a portion of the payout tube to extend therethrough, the payout panel being located such that when the clamshell is assembled and the cover is disposed perpendicularly to the open side of the clamshell the payout panel is parallel to and spaced from the cover;
• an entryway defined in said payout panel, the entryway extending from the entry edge of said payout panel to the aperture, the entryway being sized to permit said portion of the payout tube to extend therethrough;
• and
• at least one door connected to the payout panel for movement between an open position, wherein the entryway permits passage of the payout tube from said entry edge to the aperture, and a closed position, wherein the door prevents passage of a payout tube from the aperture;
• one of the cover and clamshell having a final panel which is the last panel to be closed on a filled carton, the final panel having a plurality of edges each of which includes a locking member which positively interlocks with the other of the cover and clamshell, such that the carton is free of glue joints, and wherein at least one of the edges of the final panel includes a tuck flap with a hand hold opening therein and said other of the cover and clamshell includes a finger cushion which is foldable into said hand hold opening.