DoorFast Lightning Bolt 2-Piece Closure
This two-piece Closure Bolt is our fastest closure. It is for only 2-3/8" backset doors with jambs up to 1" thick, right or left hand swing. It can be used on interior doors and exterior door to eliminate sag and to secure the door from manufacturing through installation. The DF4 Closure requires a 1" diameter or a 3/4"x1" rectangular hole through the jamb. The two parts are supplied in a connected set for a quick grab out of the box and ensure an equal number of matching parts are supplied in each box.
Units per box: 1,000
| Quantity | Discount | Item Price |
|---|---|---|
| 1–9 Boxes | – | $180/Box |
| 10–49 Boxes | -8% | $165/Box |
| 50–99 Boxes | -17% | $150/Box |
For orders larger than 9, please contact us.
Made in the USA
30+ Years in Business
Fast Shipping
| Door Type | DF4 Compatibility |
|---|---|
| Interior Door left or right hand swing | |
| Flat Jamb | |
| Split Jamb | |
| Double & Sidelight | |
| Exterior Door left or right hand swing | |
| Double | |
| Single | |
| Sidelight | |
| 2 3/8 Backset | |
| 2 3/4 Backset | |
| Slab Door | |
| 1 3/8 | |
| 1 3/4 |
Orders are typically processed within 24 hours (excluding weekends and holidays). 1–9 boxes ship via UPS Ground; larger orders ship via freight. We ship worldwide — international customers are responsible for any applicable customs duties, taxes, or import fees. Tracking information is emailed for all orders.
If your order arrives damaged, retain the packaging, photograph the damage, and contact us so we can work with the carrier on your behalf.
customerservice@doorframer.com
This is a condensed version of our Shipping Policy. View our full Shipping Policy.
About Us
We're a family-owned American manufacturer dedicated to protecting craftsmanship. Since 1992, we've become the #1 source for innovative door and window packaging solutions.
Our lineup of more than 30 products is proudly manufactured in the USA and designed to keep your products looking showroom-ready.
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