The Simpson Opti-Mesh 3-1/2 in. Epoxy Adhesive Plastic Screen Tube for 5/8 in. Rod is engineered to maximize adhesive anchor performance in hollow or void-containing base materials such as hollow block and brick. Simpson delivers the economical advantage of a plastic screen tube while providing superior performance to steel screen tubes and competitive plastic screen tubes, thanks to a woven mesh insert that controls adhesive flow and promotes uniform rod coverage. Designed exclusively for use with the ET-3G epoxy adhesive formulation, this screen tube is a purpose-built accessory for reliable, high-load anchoring installations.

Key Features

• Integral cap centers the rod and displays drill bit and rod diameter - takes the guesswork out of installation by confirming the correct rod and hole size at a glance, reducing setup errors on the job.
• Flanges prevent the screen tube from slipping into over-drilled holes - keeps the tube properly positioned even when hole depth varies, protecting adhesive placement and anchor integrity.
• Formula-specific woven mesh design controls flow of adhesive out of the screen - ensures the right amount of adhesive reaches the rod at the right rate, optimizing bond quality in hollow substrates.
• Uniform coverage of adhesive on the rod results in higher loads than for rods installed with standard screen - delivers measurably stronger anchoring performance, making it a direct upgrade over conventional screen tube options.
• Open-mesh collar allows extra adhesive flow in hollow block applications - accommodates the added volume needed in void-heavy materials, maintaining consistent coverage where standard screens fall short.
• Designed for use exclusively with ET-3G epoxy adhesive formulation - formula-matched compatibility ensures the mesh geometry and adhesive rheology work together for reliable, predictable results every time.

Why This Product

• Superior load performance over standard screens - the Opti-Mesh woven mesh insert promotes uniform adhesive coverage on the threaded rod, producing higher anchor loads than rods installed with a standard screen tube, whether steel or conventional plastic.
• Purpose-built for hollow and void-containing base materials - the open-mesh collar design actively supports extra adhesive flow in hollow block and brick applications, making this screen tube specifically suited to the anchoring conditions where performance is hardest to achieve.
• Installer-friendly design reduces on-site errors - the integral cap centers the rod automatically and displays both the drill bit size and rod diameter directly on the tube, while the flanges prevent accidental insertion into over-drilled holes, keeping installations accurate without extra measuring steps.
• Economical plastic construction without sacrificing performance - the Opti-Mesh plastic screen tube matches or exceeds the anchoring performance of steel screen tubes and competing plastic options, offering a cost-effective solution for epoxy adhesive anchoring with the trusted Simpson name behind it.

Specifications

• MPN: EWS623P
• Brand: Simpson Strong-Tie
• Material: Plastic
• Rod Diameter: 5/8 in.
• Hole Size: 7/8 in.
• Length: 3-1/2 in.
• Compatible Adhesive: ET-3G Epoxy Formulation
• Packaging: Packs of 1 and Cartons of 50
• Country of Origin: United States

Approved Applications

• Adhesive anchoring in hollow block base materials
• Adhesive anchoring in brick and other base materials containing voids
• Use with 5/8 in. threaded rod or rebar in conjunction with ET-3G epoxy adhesive

Frequently Asked Questions

What adhesive formulation is the EWS623P screen tube compatible with?

The EWS623P is designed exclusively for use with the ET-3G epoxy adhesive formulation. Screen tubes are designed for a specific adhesive type, and epoxy screen tubes must be used with the ET-3G formulation to ensure proper performance and reliability.

What rod diameter and hole size does the EWS623P accommodate?

The EWS623P is designed for a 5/8 in. rod diameter and requires a 7/8 in. drilled hole size. The integral cap helps center the rod and displays the drill bit and rod diameter for easy reference during installation.

Why should I use an Opti-Mesh screen tube instead of a standard screen tube?

The Opti-Mesh screen tube features a formula-specific woven mesh design that controls the flow of adhesive out of the screen, resulting in uniform coverage of adhesive on the rod. This uniform coverage produces higher loads than rods installed with a standard screen, making it superior in performance to both steel screen tubes and competitive plastic screen tubes.

What prevents the EWS623P screen tube from slipping into an over-drilled hole?

The EWS623P features flanges specifically designed to prevent the screen tube from slipping into over-drilled holes. Additionally, the open-mesh collar allows extra adhesive flow in hollow block applications, ensuring consistent and reliable anchor performance in void-containing base materials.

Note: Product dimensions may differ from picture. Please refer to the specifications listed above for accurate dimensions.