Wooster Brush 4181-1 Thin Angle Sash Brush 1 Inch

Product Description

The WOOSTER BRUSH 4181-1 is a 1-inch thin angle sash paintbrush from the Ultra/Pro Willow line, designed for detail and trim work where consistent edge control matters. The brush features a firm nylon/polyester blend filament — referred to as a Willow Firm formulation — which holds paint well and releases it evenly across surfaces. A square rust-resistant steel ferrule locks the filament in place and resists corrosion from water-based coatings. The treated maple tapered wood handle provides a secure grip during extended use. This brush is suited for professional painters, finish carpenters, and trade contractors who require repeatable results on sash, trim, and cut-in work.

The 4181-1 is built for precise application on window sash, door frames, baseboards, crown molding, and similar narrow or angled trim surfaces. The thin angle sash profile allows the bristle tip to follow edges and corners cleanly without overloading. It performs well with latex and water-based paints, stains, and varnishes. Professional painters and finish tradespeople typically reach for this brush when cutting in along sharp lines or working in confined trim areas where a wider brush would be unmanageable.

Key Features

• Firm nylon/polyester Willow Firm filament blend for consistent paint release and edge control
• Thin angle sash cut allows precise line work on trim, sash, and corners
• Square rust-resistant steel ferrule for durable filament retention and corrosion resistance
• Treated maple tapered wood handle for comfortable grip and balance
• 1-inch width suited for narrow trim, sash rails, and detail work

Compatibility

Designed as an OEM-style replacement or standard-use brush compatible with latex, acrylic, and water-based coatings applied to interior and exterior trim surfaces.

Installation Notes

No power tools or mechanical fasteners are required for use. Rinse thoroughly with clean water after use with latex or water-based coatings, and reshape the filament tip before storage to maintain brush geometry. Do not soak the handle in water for extended periods, as this can loosen the ferrule or cause wood swelling. Store flat or bristle-up to preserve the angle profile.