Hoppe Handle Extension – 3/4" Extension, White

SKU: 638185

$47.42 - $47.42

$47.42

$47.42 - $47.42

$47.42

Overall Length: 1-1/16" (27mm)
Extension to Handle Length: 3/4" (20mm)
Outer Diameter: 15/16" (24mm) with 11/16" (17mm) thin and wide section
Inner Diameter: 9/16" (14mm)
Spindle Diameter: 5/16" (8mm)
Color: White
Application: Active handles that move up and down (not for dummy handles)
Note: Adding this extension requires a longer spindle
Priced and sold each

Not sure this is the right part?

Before you order, if you'd like confidence this is the right part for your job, please call us at (816) 221-6543 .

*We have a fully-staffed customer support team happy to help!

Product Details

Hoppe Handle Extension – White (638185)

This Hoppe handle extension is designed for active or inactive/passive door handles that move up and down. It provides additional reach between the handle and the door mechanism. This extension is not compatible with dummy handles.

The extension measures 1-1/16 inches (27mm) in overall length with a 3/4 inch (20mm) extension length to the handle. The outer diameter is 15/16 inches (24mm) with a thin and wide section measuring 11/16 inches (17mm). The inner diameter is 9/16 inches (14mm) and accepts a 5/16 inch (8mm) spindle.

Technical Information

Overall Length: 1-1/16 inches (27mm)
Extension to Handle Length: 3/4 inches (20mm)
Outer Diameter: 15/16 inches (24mm)
Inner Diameter: 9/16 inches (14mm)
Spindle Diameter: 5/16 inches (8mm)
Color: White

Notes

When adding a 3/4 inch extension, a longer spindle is required to connect the levers
Standard spindle for a 1-3/4 inch door is 4-7/16 inches (120mm)
If adding 1 extension, a 5-1/2 inch (140mm) spindle is needed (517589)
If adding 2 extensions, a 6-1/4 inch (160mm) spindle is needed (519200)
Longer custom extensions and spindles are available as special order

Related Parts

517589 - 5-1/2 inch (140mm) spindle for use with 1 extension
519200 - 6-1/4 inch (160mm) spindle for use with 2 extensions

Priced and sold each.

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

Frequently Asked Questions

Will this extension work with dummy handles?

No, this extension is designed only for active or inactive/passive handles that move up and down. It will not work with dummy handles.

Do I need additional parts when installing this extension?

Yes, adding this extension requires a longer spindle. For one extension, use a 5-1/2 inch (140mm) spindle (517589). For two extensions, use a 6-1/4 inch (160mm) spindle (519200).

What spindle diameter does this extension accept?

This extension accepts a standard 5/16 inch (8mm) spindle diameter.

Shipping & Returns

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.

Authorized Retailer

Ensuring Quality and Compatibility

Need Help?

Contact our support team today

Veteran Owned

Committed to Service and Integrity