Skip to content
TRIM-TEX 923 3/8 in. Bullnose 3-Way Molded Corner, High Impact Polystyrene Drywall Corner Piece
Regular price $67.97Orders start at $399 — combine any items to reach the minimum. Learn more
The Trim-Tex 923 is a 3/8 in. medium bullnose 3-way molded corner used where multiple bullnose drywall beads meet, giving a clean finished corner without custom cutting. It is molded from durable, resilient high impact polystyrene and installs easily to speed up finishing. One carton contains 50 pieces; pair with Trim-Tex 3/8 in. bullnose beads.
Key Features
- Faster finishing: Molded corners replace time-consuming cutting and mitering where bullnose beads meet.
- 3-way design: The 3-way corner configuration handles intersections of multiple bullnose beads.
- 3/8 in. radius: Sized for 3/8 in. medium bullnose drywall trim.
- Durable material: Made of durable, resilient high impact polystyrene.
- Easy install: Designed for easy installation with standard drywall finishing methods.
- Bulk carton: Ships 50 pieces per carton for larger jobs.
Specifications
- Manufacturer model
- 923
- Sell unit
- 1 molded corner (50 pcs/ctn)
- Material
- High impact polystyrene
- Color / finish
- White (molded polystyrene)
- Nominal size
- 3/8 in. medium bullnose, 3-way corner
- Pack quantity
- 50 pcs/ctn
- Intended use
- Finishing drywall corners where multiple 3/8 in. bullnose beads meet
- Assembly
- Install with bullnose bead and joint compound; no mitering required
- Manufacturer warranty summary
- Not stated in available sources
Coverage and How Much You Need
Each molded corner covers a single 3-way intersection of 3/8 in. bullnose beads. Estimate one corner per three-bead intersection and count your tee, off-angle and bullnose-to-90-degree transitions when sizing a job.
Fit and Compatibility
Designed for use with Trim-Tex 3/8 in. medium bullnose drywall beads. Bullnose base adapters (sold separately) transition rounded beads to 90-degree corners for baseboard installation.
Frequently Asked Questions
What is included?
One molded 3-way corner; the sell unit is a single piece, and the product ships 50 pieces per carton.
What bead size does it fit?
It is made for 3/8 in. medium bullnose drywall beads.
What material is it made of?
It is a molded high impact polystyrene corner, described by the manufacturer as durable and resilient.
How is it installed?
Fit it at the intersection of bullnose beads and finish with joint compound like standard trim accessories; it eliminates mitering.
How do I handle baseboards with bullnose corners?
Use Trim-Tex bullnose base adapters, sold separately, which transition rounded beads to 90-degree corners for installing baseboards.
Are there any warnings?
California residents: the listing carries a Proposition 65 warning for cancer and reproductive harm.
Product Expert Notes
Molded 3-way corners are the fastest way to handle off-angle intersections that are tedious to miter in vinyl bullnose trim. Match the corner radius to your bead — this one is for 3/8 in. medium bullnose — and embed it in compound alongside the beads so the finish is seamless. Order by the 50-piece carton if you have multiple rooms of bullnose corners.
Standard SDS guidance for molded polystyrene corners: avoid dust inhalation and eye contact during cutting and sanding, and wear appropriate personal protective equipment.
Order the Trim-Tex 923 3/8 in. bullnose 3-way molded corner for fast, clean drywall corner finishes.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
