Interior Shutter Kits 1 1/4" Louver, Bass Wood (Paint Finish-Snow White, 27-29" W x 24" H) Sizes shown are Width x Length 1 1/4" Movable Louvers ,Bass Wood Panels can be trimmed up to 3/4" on top and 1 1/2" on bottom. 23" Set comes with 2 panels, all other sets have 4 panels. If mounting kit on outside of window jamb allow at least 2.5" inches for mounting screws.