--- product_id: 394769103 title: "Defender Security S 4378 Sliding Door Loop Lock, 1-7/16 inch, Diecast Construction, Nickel Plated, (single pack)" brand: "prime-line" price: "€ 36.98" currency: EUR in_stock: true reviews_count: 5 category: "Prime Line" url: https://www.desertcart.hr/products/394769103-defender-security-s-4378-sliding-door-loop-lock-1-7 store_origin: HR region: Croatia --- # 1-7/16 inch secure fit Easy, fast installation Weather-resistant hardened steel Defender Security S 4378 Sliding Door Loop Lock, 1-7/16 inch, Diecast Construction, Nickel Plated, (single pack) **Brand:** prime-line **Price:** € 36.98 **Availability:** βœ… In Stock ## Summary > πŸ” Lock in your peace of mind with effortless style ## Quick Answers - **What is this?** Defender Security S 4378 Sliding Door Loop Lock, 1-7/16 inch, Diecast Construction, Nickel Plated, (single pack) by prime-line - **How much does it cost?** € 36.98 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/394769103-defender-security-s-4378-sliding-door-loop-lock-1-7) ## Best For - prime-line enthusiasts ## Why This Product - Trusted prime-line brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Diecast steel core with nickel plating resists corrosion and daily wear - β€’ **Effortless Setup:** Mounts seamlessly to door jamb and sliding door with included fastenersβ€”no pro needed - β€’ **Trusted Peace of Mind:** Highly rated by users for reliable safety and simple use - β€’ **All-Weather Protection:** Weather-resistant design keeps your home secure rain or shine - β€’ **Precision Fit Security:** 1-7/16 inch width ensures a snug, tamper-proof lock every time ## Overview The PRIME-LINE Defender Security S 4378 Sliding Door Loop Lock offers a robust 1-7/16 inch diecast steel construction with a sleek nickel finish. Designed for quick installation on sliding doors and jambs, it features weather-resistant hardened steel for durable, long-lasting security. Trusted by homeowners for its reliable deadbolt mechanism and corrosion resistance, this lock combines modern style with essential protection. ## Description This sliding door loop lock is constructed from steel and die cast. It comes finished in nickel and secures door to jamb. This type of sliding door loop lock is quick and easy to install. Review: Cerradura para puerta corrediza - Excelente cerradura, muy sencilla de utilizar y muy segura Review: Peace of mind safety and easy install ## Features - 1-7/16 in. width - Mounting to the door jamb and door - Hardened steel with a zinc plate finish - Easy to install - Includes fasteners ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BNQXQJM | | Additional Features | Weather Resistant | | Brand | PRIME-LINE | | Brand Name | PRIME-LINE | | Color | Nickel | | Customer Reviews | 4.4 out of 5 stars 103 Reviews | | Finish Types | Nickel | | Global Trade Identification Number | 00049793043788 | | Included Components | fasteners | | Item Dimensions | 16 x 36 x 189 millimeters | | Item dimensions L x W x H | 16 x 36 x 189 millimeters | | Lock Type | Deadbolt | | Lock type | Deadbolt | | Manufacturer | Prime-Line Products (Home Improvement) | | Material | Steel/Diecast | | Material Type | Steel/Diecast | | Model Number | S 4378 | | Recommended Uses For Product | Securing doors, ensuring door privacy | | Recommended uses for product | Securing doors, ensuring door privacy | | Shape | Round | | Special features | Weather Resistant | | Style Name | Modern | | UPC | 049793043788 | | Unit Count | 1 Count | ## Product Details - **Brand:** PRIME-LINE - **Special Feature:** Weather Resistant - **Lock Type:** Deadbolt - **Item dimensions L x W x H:** 0.63 x 1.43 x 7.44 inches - **Material:** Steel/Diecast ## Images ![Defender Security S 4378 Sliding Door Loop Lock, 1-7/16 inch, Diecast Construction, Nickel Plated, (single pack) - Image 1](https://m.media-amazon.com/images/I/51ccskNLTgL.jpg) ## Questions & Answers **Q: Can i use this on a exterior door that opens outward?** A: Use your own discretion. It is for a sliding patio door. **Q: What is the diameter of the pin?** A: The pin is 1/4". ## Customer Reviews ### ⭐⭐⭐⭐⭐ Cerradura para puerta corrediza *by J***S on 13 December 2024* Excelente cerradura, muy sencilla de utilizar y muy segura ### ⭐⭐⭐⭐⭐ Peace of mind safety and easy install *by D***N on 2 October 2025* ### ⭐⭐⭐⭐⭐ Extra Latch for Murphy Bed in RV *by T***O on 26 June 2024* ## Frequently Bought Together - Prime-Line S 4378 Sliding Door Loop Lock, 1-7/16 In., Diecast Construction, Nickel Plated (Single Pack) - Prime-Line U 9846 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 1-1/8 In. Hardened Steel Bar with Diecast Base, Nickel Plated (Single Pack) - Prime-Line U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Install Additional Child-Safe Security, 2-1/8 In. Hardened Steel Bar with Diecast Base, Chrome Plated (Single Pack) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/394769103-defender-security-s-4378-sliding-door-loop-lock-1-7](https://www.desertcart.hr/products/394769103-defender-security-s-4378-sliding-door-loop-lock-1-7) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-09*