Mason-Lite Structural Metal Base - MFPB The Mason-Lite Structural Metal Base - MFPB is engineered to provide a strong, stable, and code-compliant foundation for Mason-Lite wood burning fireplaces installed on combustible wood floors. Designed for superior structural support, these heavy-duty fireplace bases help simplify installation while protecting combustible surfaces with included insulation and cement board components. Built specifically for Mason-Lite firebox systems, the MFPB Structural Metal Base includes insulation blankets, all-thread rods, mounting brackets, and dual cement boards for dependable support and enhanced thermal protection. Ideal for residential fireplace installations, remodels, and custom masonry fireplace projects, these metal bases offer durability, safety, and installation flexibility for professional contractors and homeowners alike. Whether you're installing a 33", 39", 43" see-thru, 44", 49", or 63" Mason-Lite firebox, the MFPB series delivers the strength and stability needed for long-lasting wood burning fireplace performance. Features Designed for Mason-Lite wood burning fireplace installations on combustible wood floors Heavy-duty structural metal base construction for reliable support Includes insulation blanket for added floor protection and heat resistance Comes complete with all-thread rods, brackets, and (2) cement boards per base Helps create a safe and code-compliant fireplace installation Compatible with multiple Mason-Lite firebox sizes Ideal for residential, custom home, and masonry fireplace projects Durable construction designed for long-term fireplace support Additional mounting hardware may be required depending on installation requirements Perfect for professional contractors and DIY fireplace installations Specifications Model Description Compatible Firebox Weight MFPB63 8" Structural Metal Base 63" Firebox 219 lbs MFPB49 6" Structural Metal Base 49" Firebox 140 lbs MFPB44 6" Structural Metal Base 44" Firebox 128 lbs MFPB43 8" Structural Metal Base 43" See-Thru Firebox 115 lbs MFPB39 6" Structural Metal Base 39" Firebox 103 lbs MFPB33 6" Structural Metal Base 33" Firebox 85 lbs Resources Metal Base Installation Guide Metal Base Spec Sheet