010080F | Raypak 207-407A Front & Rear Refractory Kit

The Raypak 010080F Front & Rear Refractory Kit is a genuine OEM replacement designed to restore the firebox shielding in 207A, 207B, 407A, and 407B (Low-NOx / IID digital) heater models. The kit includes both front and rear refractory common blocks (“commons”) that protect metal firebox walls from direct flame exposure, heat stress, and erosion. Using these refractory blocks helps maintain proper combustion efficiency, guards heater structural integrity under high-temperature cycles, and reduces heat loss. When the existing refractory has cracked, deteriorated, or degraded through operation, replacing with the 010080F kit helps preserve performance and safety.

• Includes Both Front & Rear Commons: Provides full firebox protection by replacing both front and rear refractory blocks to shield internal metal from high-heat flame exposure.

• OEM Fit for 207A-407A Series: Engineered specifically for Raypak 207A, 407A (and B variants), matching factory dimensions for secure fit and proper flame path alignment.

• Restores Combustion Efficiency: Replacing damaged refractory helps reduce radiant heat loss and flame impingement, improving burner stability and maintaining proper heat transfer.

• High-Heat Durable Material: Made from refractory ceramics rated for repeated thermal cycling, high temperatures, and exposure to combustion by-products—less prone to cracking or erosion.

• Critical for Heater Longevity & Safe Operation: Worn commons can cause hot spots, damage to headers or heat exchangers, and degraded safety sensor readings; this kit helps prevent those risks.