Abstract: A retainer for attaching a sheet to a structure includes a fixing potion, a first engagement feature, and a second engagement feature. The fixing portion may engage an edge of a sheet, such as but not limited to a covering material. The first engagement feature may engage the structure, and the second engagement feature may engage the structure. In various embodiments, the first engagement feature engages the structure at least in a temporary holding configuration of the retainer relative to the structure, and the second engagement feature engages the structure at least in a full engagement configuration of the retainer relative to the structure.

Abstract: A sheet fastener for fastening a pair of sheet edges includes a first member and a second member. The first member includes a first fixing portion configured to engage a first edge of the pair of sheet edges and a holder continuous with the first fixing portion. The holder defines a first recess and includes a projection and a support portion that define an opening to the first recess. The second member includes a second fixing portion configured to engage a second edge of the pair of sheet edges and a head continuous with the second fixing portion. The head includes a front edge opposite from the second fixing portion and a head surface extending from the second fixing portion to the front edge. The head is insertable into the first recess such that a portion of the head surface maintains contact with the projection of the holder.

Abstract: A clip includes a clip body, a first side wing, and a second side wing. The clip body includes a top end, a bottom end, a front end, a rear end, a first side, and a second side. The top end, the bottom end, the first side, and the second side define a receiving region, and the top end defines an opening to the receiving region. The first side wing includes a first wing base proximate to the top end and extending outward from the first side. The second side wing includes a second wing base proximate to the top end and extending outward from the second side.

Abstract: A sheet fastener for fastening a pair of sheet edges includes a first member and a second member. The first member includes a first fixing portion configured to engage a first edge of the pair of sheet edges and a holder continuous with the first fixing portion. The holder defines a first recess and includes a projection and a support portion that define an opening to the first recess. The second member includes a second fixing portion configured to engage a second edge of the pair of sheet edges and a head continuous with the second fixing portion. The head includes a front edge opposite from the second fixing portion and a head surface extending from the second fixing portion to the front edge. The head is insertable into the first recess such that a portion of the head surface maintains contact with the projection of the holder.