Screws require pre-drilling . Not suitable for painting. Louvers tend to warp Maple Very heavy. Adds lots of weight to window jambs. Screws require pre-drilling.
Louvers are hard to tension uniformly.
Poplar Mills and paints well. Mineral streaks and green shade make it unsuitable for staining. Less costly - best used for millwork and trim that is nailed in place. Generally results in a lesser quality shutter. Cedar Mills and finishes nicely.