A weatherstripping for use with a frame having at least one channel comprises a backing and a weatherstripping material coupled to the backing. The backing has a front surface, a bottom surface opposite the front surface, a first side edge, a second side edge opposite the first side edge, a central support defining a central axis, and a plurality of alternating tabs extending from the central support to the first side edge to define notched out spaces between the alternating tabs. The second side edge defines a plane that is parallel to the central axis of the central support. The weatherstripping material, which is coupled to the backing, extends from the front surface of the backing.