Ronstan RF41712 Series 40 High Load Exit Box Single Rope & Wire

The Ronstan Series 40 High Load Exit Box is engineered for applications where lines need to pass through decks, bulkheads, or spars with minimal friction and chafing. Designed to handle both rope and wire, this exit box features a plain bearing sheave ideal for halyards and other applications where high static loads are encountered.

Key Features:

• 40mm (1-9/16") diameter Nylatron sheave for smooth operation and durability
• Grade 316 stainless steel cheeks for maximum corrosion resistance in marine environments
• Accommodates rope up to 10mm (3/8") diameter
• Accepts wire cable up to 5mm (3/16") diameter
• 1,000kg (2,200 lbs) breaking load for reliable performance under load
• Plain bearing design optimized for high static load applications

This exit box is an essential component for sailboat rigging systems, providing a protected pathway for running rigging while reducing wear on lines. The combination of self-lubricating Nylatron sheave material and robust stainless steel construction ensures long-term performance in demanding marine conditions.