4mm low-iron float glass
Choose thickness
Cut to your finished sizes
Polished edge with small safety chamfer
Your supplier confirms sheet stock, cutting, processing and delivery for this annealed glass.
Plan your panels
No specification yet? Describe the project. Sizes and technical details can follow with the supplier.
Set the specification once. Enter finished glass sizes, add every size and quantity below, then send the whole set to your basket.
Raw-sheet formats and finished sizes →
Annealed glass: supplied without toughening. Your supplier checks that the proposed application and processing suit annealed glass.
Your panel schedule
Finished glass sizes in millimetres. Each row uses the shared glass specification. Add its own processing below the size.
Finished size limits — 4mm low-iron float glass. Minimum and maximum finished width and height: supplier to confirm for the chosen thickness, finish, shape and processing. Enter the sizes you need for a quotation.
Online entry range: 1–20,000mm for each dimension; this is a form limit, not a manufacturing range. Unknown sizes can be left blank in Simple mode. Raw-sheet formats do not set finished-panel limits.
Panel 1: holes, cut-outs and extra processing Optional
These options apply only to this row. Duplicate the row to copy its processing. Hole centres are measured from the top-left corner: X goes right and Y goes down.
The supplier checks its own hole limits and final drawing. Socket cut-outs may have a finished internal radius around 10–13mm, depending on the factory.
Transport, fitting, processing fees, stock, tolerances and suitability are confirmed in the supplier’s quote. Selecting a thickness does not approve an application.
Description and application images
4mm low-iron float glass cut to size, supplied in annealed form without toughening. Reduced iron content gives a less green appearance than standard clear float glass. Choose finished sizes, shapes, edge and corner finishes, holes, cut-outs and other processing requests using the same panel planner as our toughened range. Annealed glass does not have the increased strength or breakage behaviour of toughened safety glass. Your supplier confirms the application, stock, processing and delivery.
Float / annealed glass
This is a single sheet of annealed glass. It has not been heat-treated to become toughened glass and can break into large, sharp fragments. Matching a toughened panel’s thickness and shape does not give it the same strength or safety performance.
Choose your sizes and processing
The planner offers the same shapes, edge and corner finishes, holes, cut-outs, painting, sandblasting and waterjet quotation requests as the toughened range. Add several sizes and quantities, with separate processing notes for each panel. The supplier confirms which processing and sheet sizes are available for the chosen thickness.
Low iron refers to reduced iron content and a less green appearance; it does not mean toughened or Low-E glass.
Compare clear float glass → · View 4mm low-iron toughened glass →
Manufacturer background: Pilkington glass glossary · Pilkington Optiwhite™. Brand and availability are confirmed in the supplier quotation.
Suitable uses and specification limits
Request annealed glass for framing, cabinet inserts or other glazing where the supplier confirms the construction is appropriate. Tell the supplier about impact risk, location and supports.
This glass is supplied without toughening. The catalogue does not assign safety performance from the sheet thickness. Manufacturing limits and suitability require confirmation.
Available shapes and glass options
Plan a rectangle or square, circle, oval or custom outline. Circles use the same diameter in both size fields; ovals use overall width and height. Custom shapes need a dimensioned drawing.
Current product: 4mm low-iron float glass · 4mm. Keep the glass type, treatment and thickness with every panel.
Choose options in the planner →Edge finishes and fabrication choices
Request polished edges with a small safety chamfer, arrissed edges or a separately quoted decorative bevel. Choose dubbed corners, a 2mm radius or a custom radius. Holes, cut-outs, waterjet work, painting and sandblasting are requests for supplier review.
Include the face, orientation and drawing reference for each panel. The quotation must confirm the processing, tolerances and charges before manufacture.
Measuring instructions
- Record finished glass width and height in millimetres, with a quantity for every different panel. Identify which face you are viewing.
- For fitted panels, measure the opening in several places and record those measurements separately. Agree fitting clearances with your supplier; do not apply an assumed deduction.
- Dimension holes from the same reference edges, stating their diameters, cut-outs, corner radii and any notches. Give custom outlines a drawing or template reference.
Not sure of the finished size? Use a simple enquiry and request measuring or fitting advice. A photograph alone is not a manufacturing drawing.
Typical raw stock-sheet formats
Primary manufacturers make raw sheet glass. Fabricators and processors cut, treat and assemble it for individual orders. Supply may pass through distributors; direct-sales arrangements vary.
Official manufacturer information: Pilkington, Fuyao Glass, AGC Group, Guardian Glass, Saint-Gobain. These are non-exhaustive industry examples, not preferred suppliers. Product ranges and supply arrangements vary.
These are typical formats for raw glass before cutting and processing. Availability depends on your supplier’s raw-glass source and the exact product, finish and thickness.
| Format | Raw sheet size |
|---|---|
| Machine size (standard) | 3210 × 2250 mm or 3210 × 2550 mm |
| Split size | 3210 × 2000 mm Custom split layouts may be derived from a 3210 mm ribbon; confirm the layout with your supplier. |
| Jumbo size (PLF) | 3210 × 6000 mm |
Raw sheet size is not a guaranteed orderable finished-panel size. Cutting allowances, machinery capacity and orientation, processing and handling can restrict the finished dimensions. Keep the product’s own width × height pairs and safety limits.
These formats do not establish availability for mirrors, laminates, insulated or heritage units, patterned glass, fire-rated glass or other specialist products. Their product-specific sizes and restrictions still apply.
Compare the quoted price alongside the confirmed specification, relevant quality documentation, traceable provenance and consistency. Agree shipping and lead times, handling and replacement arrangements, regardless of where the glass is made.
Enter the finished glass sizes you need in the planner. Your supplier confirms the raw material and what can be cut, processed, handled and supplied for that specification.
Drawing and photograph upload
Include an overall view, close-ups of supports or frames, and a drawing with panel references, dimensions and orientation.
PDF, JPG, PNG or WebP · up to 6 files per product · 5MB per file. Files stay in this browser on this device and are available with this product in your basket. Supply them separately to your supplier when requested. Keep your originals; clearing browser data removes these copies.
Updating local files…
Get a price or supplier quote
Configure your panels or describe what you need. Your supplier confirms glass, processing, VAT, delivery and any measuring or fitting charges in the quotation.
Build your basket to request a supplier quotation. Adding a request is not an order.
Delivery, collection and fitting information
Delivery
Your supplier confirms sheet stock, cutting, processing and delivery for this annealed glass.
Give your actual project postcode and access details. Agree packaging, unloading, handling equipment and the delivery date with your supplier.
Collection
Request factory collection where available. Wait for readiness confirmation and agree a time, loading arrangements and suitable transport before travelling.
Measuring and fitting
Ask for supply only, glass with fittings, or supply and installation. Measuring, removal of existing glass, fixings and fitting need an agreed scope and price.
FAQs and care advice
Can I choose a thickness from an application picture?
The picture shows a use context. The supplier needs the finished dimensions, support, loading and exact installation to confirm a construction.
Can I request a quote before I know all the sizes?
Yes. Start with the intended use and what you already know. Ask for help measuring or specifying, then approve the final dimensions and drawing with the supplier.
Are shaping, processing and fitting included in the price?
The supplier quotation confirms each included item and any separate charge. Planner choices are requests for review; they do not establish a final price.
How should I care for this glass?
Ask for cleaning instructions for the supplied surface. Use a clean soft cloth and a cleaner approved for that glass; avoid abrasive pads and scraping. Check any coatings, painted surfaces or exposed laminate edges before applying a cleaner.