The Simpson Opti-Mesh 8 in. Epoxy Adhesive Plastic Screen Tube for 3/4 in. Rod is engineered by Simpson Strong-Tie to deliver reliable adhesive anchoring performance in hollow or void-containing base materials such as hollow block and brick. This gray plastic screen tube features a woven mesh insert that provides the economical advantage of a plastic construction while offering superior performance compared to steel screen tubes and competitive plastic screen tubes. Designed exclusively for use with the SET-3G epoxy adhesive formulation, it is a purpose-built accessory for contractors and installers who need consistent, controlled adhesive flow during anchor installation.

Key Features

• Integral cap centers the rod and displays drill bit and rod diameter - keeps the rod properly aligned during installation and gives the installer an at-a-glance reference for correct hole and rod sizing, reducing setup errors.
• Flanges prevent the screen tube from slipping into over-drilled holes - ensures the screen stays at the correct depth even when the drilled hole is slightly longer than intended, protecting placement accuracy and adhesive performance.
• Formula-specific woven mesh design controls flow of adhesive out of the screen - regulates how the SET-3G epoxy disperses through the mesh, promoting a consistent and thorough bond around the anchor rod.
• Open-mesh collar allows extra adhesive flow in hollow block applications - accommodates the larger void volumes found in hollow block, helping ensure adequate adhesive fill and a strong anchor set in these challenging base materials.
• Designed exclusively for use with SET-3G epoxy adhesive - the screen tube is engineered to match the specific flow characteristics of the SET-3G formulation, so using the correct pairing maintains the integrity and load performance of the anchor system.

Why This Product

• Purpose-matched for hollow and void-containing base materials - the Opti-Mesh screen tube is specifically built for anchoring applications in hollow block, brick, and similar substrates where a standard installation approach would allow adhesive to flow into voids uncontrolled, compromising the anchor.
• Plastic construction with performance that exceeds steel alternatives - the woven mesh insert gives this screen tube an edge over both steel screen tubes and competing plastic options while keeping material costs economical - a practical benefit for volume anchoring work.
• Built-in installation safeguards reduce on-site errors - the integral cap with drill bit and rod diameter markings combined with the anti-slip flanges work together to guide correct sizing and consistent placement, helping installers work accurately and efficiently.
• Simpson Strong-Tie engineering designed around the SET-3G system - rather than a generic screen tube, this is a formula-specific accessory whose mesh design is calibrated to work with SET-3G epoxy adhesive, supporting the full performance potential of that anchoring system.

Specifications

• Model Number (MPN): 3GWS758P
• Compatible Adhesive Formulation: SET-3G (Epoxy)
• Bolt/Rod Diameter: 3/4 in.
• Hole Size: 1 in.
• Length: 8 in.
• Material: Plastic
• Color: Gray
• Packaging: Packs of 1 and Cartons of 25
• Country of Origin: United States

Frequently Asked Questions

What adhesive formulation must be used with this screen tube?

This screen tube is designed specifically for use with the SET-3G epoxy adhesive formulation. Epoxy screen tubes must only be used with the SET-3G formulation, as screen tubes are engineered for a specific adhesive type.

What base materials is this screen tube designed for?

This Opti-Mesh screen tube is vital to the performance of adhesive anchors in base materials that are hollow or contain voids, such as hollow block and brick. The open-mesh collar specifically allows extra adhesive flow in hollow block applications.

How does this plastic screen tube compare to steel screen tubes?

The Simpson Strong-Tie Opti-Mesh screen tube with woven mesh insert provides the economical advantage of a plastic screen tube while delivering superior performance to steel screen tubes and competitive plastic screen tubes.

What prevents the screen tube from falling into an over-drilled hole?

The screen tube is designed with flanges that prevent it from slipping into over-drilled holes, ensuring proper placement and consistent adhesive performance during installation.

Note: Product dimensions may differ from picture. Please see the item description above for specifications.