The Rust-Oleum Zinsser B-I-N Shellac Base Primer & Sealer Stain Killer is a reliable base primer-sealer that is suitable for interior and spot exterior use. It consistently seals knots sticks to all surfaces without sanding.Features Shellac-base primer-sealer Suitable for interior and spot exterior use Greatest stain sealer Seals knots and sap streaks Sticks to all surfaces without sanding Lightning fast dry - recoat in 45 minutes Works with any top coat Specifications Weight:2.7 lb Dimension:13" x 9" x 5" Type: Primer and Sealer Size: 1 Qt Color: White