ALL METAL & WATERPROOF: Made of high-quality, sturdy zinc alloy and aluminum with multiple casting processes, oxidation-resistant treatment, and wear resistance for long-term outdoor use. UV- and waterproof to prevent fading. FITS MOST RV DOORS: Compatible with hole cutouts measuring 3.6 inches tall x 2.67 inches wide and door thicknesses from 1.25 to 1.5 inches. Designed for doors with hinges on the right side. Suitable for travel trailers, trucks, cargo carriers, and similar applications. Not compatible with Class A or Class C RVs. Please verify your RV door dimensions before purchasing. KEYED SECURITY: Features a tamper-proof lock cylinder with unique key coding—each key is specific to this lock with no duplicates. Includes 4 mechanical keys. EASY TO INSTALL: Installs in approximately 10 minutes. Replace a broken lock yourself without professional assistance. SECURE & RELIABLE: Dual interior and exterior assembly, silent operation, smooth switching mechanism. Not a card-based lock. Includes a built-in deadbolt and interior locking function for enhanced security and theft prevention. Color: White Material: Zinc Alloy + Aluminum Alloy Package Contents: 1 x RV Entry Door Lock, 4 x Keys Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.