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G-U Terrace Door Lock with Euro Profile Cylinder Bore – 40mm Backset

G-U Terrace Door Lock with Euro Profile Cylinder Bore – 40mm Backset

SKU: 6-25918-40-0-FG

$102.83 - $102.83
$102.83
$102.83 - $102.83
$102.83
  • Lock Type: Euro Profile Cylinder
  • Backset: 1-9/16" (40mm)
  • Faceplate Width: 15/16" (24mm)
  • Faceplate Height: 7-7/8" (200mm)
  • Door Thickness: 1-3/4" to 2-5/8" (44mm to 67mm)
  • Upper section of two-part assembly – connects to lower handle/lever assembly #6-25918-40-0-1
  • For terrace doors, bi-fold doors, and folding aluminum doors
  • Available backsets: 25mm, 30mm, 35mm, 40mm, 45mm, 50mm
  • Sold individually
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G-U Terrace Door Lock – Euro Profile, 40mm Backset (6-25918-40-0-FG)

This G-U / Ferco terrace door lock features a Euro Profile cylinder bore and serves as the upper section of a two-part locking assembly. It connects to the lower handle/lever assembly (part #6-25918-40-0-1) to create a complete locking system for terrace doors, bi-fold doors, and folding aluminum doors.

Designed for doors ranging from 1-3/4 inches to 2-5/8 inches thick, this lock is compatible with various lever and cylinder configurations beyond just G-U / Ferco hardware.

Technical Information

  • Lock Type: Euro Profile Cylinder
  • Backset: 1-9/16 inches (40mm)
  • Faceplate Width: 15/16 inches (24mm)
  • Faceplate Height: 7-7/8 inches (200mm)
  • Door Thickness Range: 1-3/4 inches to 2-5/8 inches (44mm to 67mm)
  • Available Backsets: 25mm, 30mm, 35mm, 40mm, 45mm, 50mm
  • G-U Part Number: 6-25918-40-0-1

Notes

  • To identify the correct lower mortise lock mechanism, you will need the backset measurement and lever rotation type (90 degrees down only, or 180 degrees up and down)
  • Not always used with G-U / Ferco levers or cylinders

Related Parts

  • 6-25916-40-0-1 - ALU-JET insertable gear with 180 degree lever, 1-9/16 inches (40mm) backset
  • 6-25918-40-0-1 - Lock with Profile cylinder bore, 1-9/16 inches (40mm) backset (lower assembly)

Priced and sold individually.

Fill out our MPL form or call us to ensure accurate purchasing and correct fit.

Frequently Asked Questions

How do I identify the correct lower lock mechanism for this assembly?

You will need to know your backset measurement and whether your handle has 90-degree rotation (down only) or 180-degree rotation (rotates up and down).

What is a Euro Profile cylinder?

A Euro Profile cylinder is a standardized lock cylinder commonly used in European-style door hardware, featuring a distinctive keyway shape that differs from American cylinders.

Can I use non-G-U cylinders or levers with this lock?

Yes, this lock is not always used with G-U / Ferco levers or cylinders and can be compatible with other Euro Profile hardware.

At mplocks.com, we strive to provide fast, reliable, and fairly priced shipping. Below you'll find our standard shipping details, important notes, and packing practices.

Standard Shipping Rates

Shipping applies to the contiguous U.S. (orders to Alaska and Hawaii require a custom quote):

  • $11.95 – USPS First Class (5–10 business days)
  • $12.95 – USPS Priority Mail (3–6 business days)
  • $19.50 – UPS Ground (2–5 business days)

📦 Rates typically cover packages up to 4 lbs. Oversized or heavier items may incur additional charges.

Processing Times

  • Most orders ship within 2–5 business days of purchase.
  • If your order is delayed, we'll notify you promptly.

Important Notes on Shipping Costs

  • Certain items may have higher shipping costs due to weight or dimensions.
  • We reserve the right to adjust shipping fees. If this applies to your order, we'll contact you for approval before proceeding.
  • If you choose not to accept revised shipping charges, we may cancel your order at our discretion.

Backorders & Billing

  • All credit cards are charged within 72 hours of purchase.
  • This includes orders that contain backordered items.

Our Packing Standards

We take great care to ensure your order arrives safely and securely.

  • Whenever possible, we use recycled paper, cardboard, and eco-friendly packaging materials.
  • Many of our products are purchased in bulk and may not include retail packaging or barcodes. In these cases, items may be repackaged in secure, plain boxes.
  • Hardware ships in retail or contractor-grade packaging when available.
  • Every item is inspected prior to shipping, and additional packing is used if needed.

Quality Guarantee

All items are brand new unless specifically noted. If something is not right, we'll work to make it right—through repair or replacement.

⚠️ Please note: shipping costs are non-refundable.

If you have questions about shipping rates, timelines, or packaging, please contact us before placing your order.

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