Horizontal Wooden Panels With Guttering Attached
Puzzle 20 of Building a House Hard Pack
Question is: Horizontal Wooden Panels With Guttering Attached
and the answer is: FASCIA
Word Meaning:
FASCIA — (architecture) A wide band of material covering the ends of roof rafters, sometimes supporting a gutter in steep-slope roofing, but typically it is a border or trim in low-slope roofing.
Definitions from Wiktionary.