[Assembly Kit] [Bass Reflex Type] [Set of 2] ONTOMO MOOK Special Supplements: 2.4 inches (6 cm) Full Range Speaker Unit FR085CU03 Dedicated Bass Reflex Enclosure Kit "DB-FR085CU03" for the Speaker Unit FR085CU03. The slit duct position is placed below the middle of the baffle and the enclosure is designed to provide clear playback without sacrificing the appeal of the FR085CU03 with rich bass and expressive mid treble. The V-cut lumber creates a very easy assembly kit with minimal splitting of the board joints. DB-FR085CU03(B1) is finished with a zag baffle hole and a urethane clear coating on the surface. The (B1) type is most recommended that you have a sense of integrity when you wear it. Pair (1 Pair) * Speaker unit not included.