The current version of ASTM C552 includes references to Type IV - cellular glass insulation Board fabricated from Type I Flat Block. Cellular glass insulation used in building and roof applications, including the former ASTM C552 Type IV Board product, is now covered under the new standard - ASTM C1902 Standard Specification for Cellular Glass Insulation Used in Building and Roof Applications. It was agreed in the ASTM C552 Task Group that references to Type IV Board shall be removed from the ASTM C552 standard since that material now falls under ASTM C1902. An earlier Ballot of this proposed change to ASTM C552 received two negative votes that pointed out that the C552 standard needs a reference to ASTM C1902 so users will know to refer to that standard for cellular glass insulation board. The negative votes were determined persuasive. This ballot item addresses the negative votes with a proposed change to the C552 Scope, addition of a reference to ASTM C1902, and removal of the Type IV references from the ASTM C552 standard. Please note, while the entire standard is included for context, only the highlighted changes, (red and crossed out items) are being balloted.