Abstract: A duct connection system for use in a dryer ventilation duct system includes a pair of duct members that are joined together in overlapping relationship, and a connection joint for holding the duct members together. The connection joint includes a plurality of dimples projecting from an end portion and arranged circumferentially around one of the duct members for frictionally contacting another end portion of the other duct member. The end portions may be the ends of straight-walled duct components, or may be sleeves forming part of universal elbow sections, corrugated ducts, etc. The dimples extend either inwardly or outwardly from the end portion of the one duct member depending on whether the one duct member is received in or extends over the other duct member to frictionally engage and hold the duct members together. Each dimple includes a first frusto-conical crush zone integrally formed with the one end portion, and a second conical crush zone radially spaced from the first crush zone.