Sound proofing tiles with egg-crate convoluted pattern in the following sizes: 12 medium tiles of 305 x 305mm / 1 foot x 1 foot / 12" x 12" with 40mm thickness (1.11 sq. metres) 24 medium tiles of 305 x 305mm / 1 foot x 1 foot / 12" x 12" with 40mm thickness (2.23 sq. metres) 48 medium tiles of 305 x 305mm / 1 foot x 1 foot / 12" x 12" with 40mm thickness (4.46 sq. metres) 6 large tiles of 600 x 600mm / 2 feet x 2 feet / 24" x 24" with 40mm thickness (2.16 sq. metres) 12 large tiles of 600 x 600mm / 2 feet x 2 feet / 24" x 24" with 40mm thickness (4.32 sq. metres) With or without our easy to install spray adhesive can. Manufactured from high quality acoustic foam to exacting British standards in Compliance with UL94 HF1 classification.