ALL METAL & WATERPROOF: High-quality, sturdy zinc alloy and aluminum construction with multiple casting processes, corrosion-resistant, oxidation-treated, and wear-resistant for long-term outdoor use. UV-resistant and waterproof to prevent fading. FITS MOST RV DOORS: Compatible with cutout dimensions of 3.6 inches tall × 2.67 inches wide and door thicknesses from 1.25 inches to 1.5 inches. Designed for doors with right-side hinges. Suitable for travel trailers, trucks, cargo carriers, and similar vehicles. Not compatible with Class A or Class C RVs. Please verify your RV door dimensions before purchasing. KEY INCLUDED: Tamper-proof lock cylinder with unique key coding—each key is specific to this lock with no duplicates. Includes 4 mechanical keys—no need to purchase spares separately. EASY TO INSTALL: Installs in under 10 minutes. Replace a broken lock yourself and avoid costly service fees. SECURE & RELIABLE: Dual interior and exterior assembly, quiet operation, smooth switching mechanism (not a card-based lock), built-in deadbolt, and interior back-locking function for enhanced security and theft protection. Color: White Material: Zinc Alloy + Aluminum Alloy Package Includes: 1 × RV Entry Door Lock, 4 × Keys Note: Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.