Owens Corning PINK Next Gen R-13 3.5 x 23 x 93 inch Fiberglass Unfaced Batt Insulation U73

U73 sits in the sweet spot between hand-fit and production speed: a 23 in. wide unfaced R-13 batt sized for nominal 24 in. on-center 2×4 framing, paired with a 93 in. length that matches how many commercial contractors order pre-cuts for eight-foot-ish wall modules without always jumping to full 96 in. stock. The payoff is fewer aggressive compressions at stud faces and more predictable edge contact when your framing tolerances stack with sheathing, gyp, or strapping.

Like other unfaced PINK Next Gen batts, U73 keeps ancillary control layers explicit—you add kraft, foil, or smart membranes only when the energy and moisture model calls for them, which matters in retrofit corridors where you are marrying new walls to existing brick, CMU, or panelized skins. Code-facing documentation mirrors the family: ASTM C665 production, ASTM E136 noncombustible classification for unfaced glass, Title 24 Article 3 language, GREENGUARD validation, and UL Environment EPD references for embodied carbon reporting.

Estimator guidance: plan material lists around roughly 178.25 square feet per package (IDI listing), communicate dry storage, and add realistic waste for door bucks, shaft walls, and MEP conflicts. Field QC should still emphasize full thickness recovery, especially at perimeter channels where air barrier transitions are picky.