Napoleon W010-4479 Firestop 5/8" for Ascent X 42

Napoleon W010-4479 Firestop 5/8" for Ascent X 42

Napoleon W010-4479 Firestop 5/8" for Ascent X 42 is a replacement firestop component designed for Napoleon Ascent X 42 fireplaces. The 5/8" size identifies the specific opening the firestop is intended to seal, helping to maintain safe clearances around the vent path and reduce heat transfer to surrounding materials.

Installation and Fit for Napoleon Ascent X 42 Firestop

This firestop is intended for use with the Ascent X 42 model and carries the part number W010-4479. It is designed to provide a proper seal and isolation where the venting system penetrates the surrounding structure, supporting safe operation and fire safety compliance.

Key Features

• Precisely sized 5/8" firestop designed for Napoleon Ascent X 42
• Direct-fit replacement part that restores proper vent path isolation
• Helps maintain safe clearances around the fireplace venting system
• Supports efficient venting by sealing gaps that could allow heat transfer or drafts
• Designed to withstand high-temperature fireplace environments

Model Compatibility

• Ascent X 42