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GU Square End Strike Plate for 2-1/4" Doors

SKU:

  • Compatibility: Works with any GU multipoint door lock system
  • Door Thickness: Extended lip for 2-1/4" (57.2mm) thick doors
  • Style: Square end strike plate
  • Handing: Non-handed (universal)
  • Application: Typically used for manual installations
  • Available Finishes: Polished Chrome, Satin Chrome
  • Status: Discontinued – limited to existing inventory
Discontinued, replace with 9-C4777-57-0-Choose Color
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Before you order, if you'd like confidence this is the right part for your job, please fill out our multipoint lock identifier form or call us at (816) 221-6543.
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GU Square End Strike Plate – 2-1/4" Doors (9-U3339-XL-0)

This GU square end strike plate is designed for use with any GU multipoint door lock system. It features an extended lip specifically engineered for 2-1/4 inch thick doors, making it ideal for heavier or thicker door applications.

The strike plate is non-handed, meaning it can be installed on either left-hand or right-hand doors without modification. Square end strikes are commonly chosen for manual installations where precision fitting is required.

Available in Polished Chrome and Satin Chrome finishes to match your existing door hardware.

Technical Information

  • Door Thickness: 2-1/4 inches (57.2mm)
  • Strike Style: Square end
  • Handing: Non-handed (universal)
  • Original Manufacturer SKU: 9-U3339-XL-0

Notes

  • This product is discontinued and limited to existing inventory
  • Square end strikes are typically used for manual installations

Replaces / Replaced by

  • Replaced by 9-C4777-57-0 (available in multiple colors)

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

Frequently Asked Questions

Will this strike plate work with my GU multipoint lock?

Yes, this strike plate is compatible with any GU multipoint door lock system.

What door thickness is this strike plate designed for?

This strike plate has an extended lip designed specifically for 2-1/4 inch thick doors.

Is this strike plate handed?

No, this strike plate is non-handed and can be installed on either left-hand or right-hand doors.

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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