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GP4 - 4-1/2 x 5-1/4 Inch Heat Treated Glass Welding Lens Filter Plate

Packaging: 1 per each
$1.10/ea $0.73/1 per each only $0.73/eaSave 34%

In stock

SKU: LENSGP4 Categories: ,

OVERVIEW

High-Performance Heat Treated Glass Filter Plate

The GP4 Heat Treated Glass Lens Filter Plate is a premium replacement component designed for industrial welding applications requiring superior durability and optical precision. Measuring 4-1/2 inches by 5-1/4 inches, this lens fits standard large-window passive welding helmets, providing a robust solution for welders who demand the best visual acuity. Unlike polycarbonate alternatives, heat-treated glass offers exceptional resistance to thermal stress, ensuring the lens maintains its shape and clarity even during prolonged exposure to high heat.

One of the primary advantages of this glass filter plate is its inherent resistance to scratching and pitting. In heavy-duty fabrication environments, flying debris and molten spatter can quickly degrade plastic lenses, obscuring the welder's vision and necessitating frequent replacements. This heat-treated glass unit withstands such abrasive conditions significantly better, maintaining a smooth surface that is easier to clean and provides a consistent, distortion-free view of the work area. This longevity translates to reduced operational costs and less downtime for maintenance.

Optical clarity is critical for precision welding, and glass remains the gold standard for light transmission and definition. The GP4 lens minimizes eye strain by delivering a crisp, true-to-life image of the weld puddle and arc. The heat treatment process further strengthens the material, making it more resistant to impact than standard annealed glass, thereby enhancing user safety. This product is an essential inventory item for MRO supplies, catering to professionals who prioritize visual quality and equipment longevity.

Key Technical Specifications:

  • Dimensions: 4-1/2" x 5-1/4" (Standard Large View)
  • Material: Heat Treated Glass
  • Properties: Scratch-resistant, heat-resistant, superior optics
  • Compatibility: Fits most standard passive welding hoods requiring 4x5 plates
Additional Information
Packaging Description:1 per each
Item:Helmet Lense Clear, Lense Filter Plate
Lense Size:4x5
Shade or Magnifier # :n/a
Inner Or Outer:n/a
Brand:Generic
Material:Glass, Heat Treated Glass
Product Type:Passive Filter Plate
----- new values below ----
Material:Heat Treated Glass
Dimensions:4-1/2 in x 5-1/4 in
Product Type:Passive Filter Plate
Lens Type:Glass
brand:generic
item:lense-filter-plate
lense-size:4x5
material:glass
packaging-description:1-per-each

INCLUDED

  • 1 x Heat Treated Glass Lens Filter Plate (4-1/2" x 5-1/4")

APPLICATIONS

  • Stick (SMAW) Welding
  • MIG (GMAW) Welding
  • TIG (GTAW) Welding
  • Flux-Cored (FCAW) Welding
  • Heavy Fabrication
  • Structural Steel Work

FAQ

The lens measures 4-1/2 inches by 5-1/4 inches, which is a standard size for large-view passive welding helmets.

This lens is made of heat-treated glass, offering superior optical clarity and scratch resistance compared to plastic.

This is a passive filter plate designed for fixed-shade helmets. It is generally not used in auto-darkening helmets unless the helmet is designed to accept a standard 4x5 passive glass plate as a backup or replacement.

Heat treatment strengthens the glass, making it more resistant to impact and thermal shock (heat buildup) compared to standard annealed glass.

This product is a filter plate. While the specific shade isn't explicitly detailed in the generic description, filter plates are typically shaded. Please verify the specific shade requirement for your application (e.g., Shade 10, 11, etc.) or if this is a clear cover plate before use. Based on the SKU GP4, it may refer to a specific shade or model.

Glass lenses can be cleaned with standard glass cleaner and a soft, lint-free cloth. They are more resistant to scratching during cleaning than plastic lenses.

While heat-treated glass is stronger than regular glass, it is not shatterproof. Always use a clear safety polycarbonate cover lens in front of the glass filter plate to meet ANSI Z87.1 impact safety standards.

If the lens is a Shade 4 or 5 (often denoted by GP4 or similar codes), it is suitable for oxy-fuel cutting and brazing. Always ensure the shade level matches the amperage and process you are using.

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