ARMSTRONG Ceiling Tile: 1861B, Fine Fissured, 24 in x 48 in, Angled Tegular, 0.55 NRC

The ARMSTRONG 1861B Fine Fissured ceiling tile is designed for music rooms and general-purpose spaces needing acoustic control. With a 0.55 NRC and 35 CAC, it absorbs sound and blocks noise between rooms. Its mineral fiber construction is mold resistant, making it suitable for environments where moisture and acoustics matter.

The ARMSTRONG 1861B is a 24 in x 48 in mineral fiber tile with an Angled Tegular edge, sold in packs of 8. It has a Noise Reduction Coefficient (NRC) of 0.55 and a Ceiling Attenuation Class (CAC) of 35. The tile is white, mold resistant, and part of the Fine Fissured series with high recycled content.

3G Electric supplies the ARMSTRONG 1861B ceiling tile to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Fine Fissured tile, part number 1861B, for music room applications.

Install ARMSTRONG 1861B tiles in a standard suspended ceiling grid designed for 24 in x 48 in Angled Tegular edges. Ensure the grid is level and clean. Lay each tile into the grid, angling it upward to seat the tegular edge. Follow general mineral fiber tile handling guidelines to avoid breakage and maintain acoustic performance.