主权项 |
1. An anchor, said anchor comprising a base and a pair of walls, said walls affixed to said base in perpendicular orientation and spaced to define a central channel therebetween, said walls each defining a projection, said projections combining to define an anchor head, a first shoulder, said first shoulder attached to one of said walls, said anchor defining a fin that extends vertically above said projections, whereby said anchor head and said first shoulder each laterally displace when said central channel receives a fastener therein. |