Actual Size: 7-3/4" x 7-3/4" x 3-1/8" Inch This block does not include pre-drilled holes and is not intended for crafting purposes. A white bond coating is applied to each block for mortar adhesion. 45 Minute Fire Rating. Moderate Privacy -- Distorts visibility, while still allowing light to flow through Visibile Light Transmission: 75% Shading Coefficient: .65 Solar Heat Gain Coefficient: .66-.68 Sound Transmission S.T.C. (dB): .41 The Seves Glass Block 8x8x3 Nubio Glass Block brings classic elegance to modern building designs. Featuring the timeless wavy Nubio pattern, this block allows up to 75% visible light to pass through while softening direct visibility—ideal for homeowners or professionals seeking privacy without sacrificing brightness. Its moderate privacy level makes it perfectly suited for shower walls, bathroom windows, basements, partitions, and exterior accents. Constructed with premium Seves craftsmanship, the block delivers structural reliability with a 45-minute fire rating, strong thermal resistance, and an STC rating designed to reduce sound transfer. A white bond coating on the edges improves mortar adhesion, ensuring a secure, lasting installation. With its proven durability and beautiful light-diffusing design, the Nubio block remains one of the most trusted choices for both residential and commercial builds. Actual size is 7-3/4" × 7-3/4" × 3-1/8". This unit does not include pre-drilled holes and is not intended for crafting, making it ideal for architectural construction where strength and performance matter.