Patent ID: 8375658

Claim:
A multi-panel fenestration unit comprising: a frame including a top member, a bottom member, a first side member, and a second side member, the bottom member having a first end, a second end, a front, and a back and defining a length between the first and second ends and a width between the front and the back, the bottom member including a first support and a second support each extending along the length of the bottom member, the second support being spaced laterally in front of the first support to define a channel between the first and second supports that extends along the length of the bottom member; a first panel having a first side and a second side and being maintained by the first support; a second panel slidably mounted to the second support such that the second panel is adapted to slide open to a position in front of the first panel and to slide closed to a position adjacent to the first panel; and a first water restrictor secured in the channel at an intermediate position between the first and second ends of the bottom member, the first water restrictor being configured to restrain lateral water flow in the channel, the first water restrictor defining a first side and a second side; wherein the second support has a first drain hole out of the channel located on the first side of the first water restrictor and a second drain hole out of the channel located on the second side of the first water restrictor.