Product Description 
OS-400 is specifically designed for double 5/8 in drywall applications and outside 90º corners where there are large drywall irregularities. OS-400, a paper-faced composite corner bead from Strait-Flex, beautifully finishes outside 90º corners and is the largest outside corner bead on the market. This 4 in corner bead applies with all-purpose compound and features a pre-finished laminated nose ensuring a clean sharp corner. The laminated nose eliminates the risk of damage from a taping knife, will not shrink, and will not fuzz up during sanding. The bead fts outer edge features a diamond punch pattern for easier feathering, faster drying, and the highest bonding strength. The backing of OS-400 is Strait-Flex fts patented composite material creating an incredibly strong corner.
- Double 5/8 in drywall applications and outside 90º corners where there are large drywall irregularities.
- Diamond-punched 94 lb. paper edging allows for easier feathering, faster drying, and the highest bonding strength. Also guarantees an even lay-down of the paper, providing maximum adhesion with no rippling or blistering.
- Clean installation.
- Composite backing provides a tough, durable corner with no rust.
- PUR-laminated nose resists dents and ensures perfect corners without paper fuzz-up during finishing and sanding.
- Sold per case of 50
Dimensions: 4" x 8' Length
Vendor: Strait-Flex
Product Documents 
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Required Accessories 
Required Accessories 
Optional Accessories 
Optional Accessories 
Please Note: Prices, promotions, styles and availability may vary by store and online. While we do our best to provide accurate item availability information, we cannot guarantee in-stock status and availability as item quantities are constantly changing throughout the day. Inventory last updated 6/18/2013 at 5:00am CT. Rebates are an in-store service; therefore online purchases do not qualify towards rebate redemption.