30 Pack Outside Clear Cover Lens For 1740 1840 Series Welding Helmets, Compatible With KP3043-1, Replacement Cover Lens 4.5 By 3.94 Inches, Durable Weld Shield Lens, Easy Install

30-pack 4.5 x 3.94 in welding lens for 1740/1840
✔️ 30-pack polycarbonate outer lens, fits 1740/1840 KP3043-1

This replacement outer clear cover lens is designed for 1740 and 1840 welding helmets. It serves as a protective shield for the viewing window and is compatible with KP3043-1 replacement parts. This lens is commonly used in metal fabrication, automotive repair, and industrial welding where protecting the helmet’s inner filter matters.

✅ 4.5 in x 3.94 in window; thickness ~0.04 in
✅ Compatible with 1740 and 1840 series covers via KP3043-1 compatibility
✅ 30-piece pack, independently packaged for easy restocking
✅ Polycarbonate material offers impact and scratch resistance
✅ Protects auto-darkening filters from sparks and distortion

💡 What is a welding helmet lens cover used for? Protects the outer lens and keeps visibility clear during welding tasks. - Shields the outer window from heat, sparks, and wear - Extends life of the inner auto-darkening filter - Fits 1740/1840 series covers and KP3043-1 replacements - Simple swap for quick maintenance