Interior plain Square Balusters are typically used with Handrail which has a bottom channel (plow).
Fillet is used to fill the channel between Balusters. Although some Balusters are offered primed, they are for interior use only and are not recommended for exterior use. Primed Balusters are typically Pine. A 10% restocking fee applies to returned Plain Square Balusters. Drawings not to scale.