Vacuum Panels and Gel: Cutting Mass Without Losing Hold Time
VIP boxes cut gel mass 30-40 percent, not 60. Why a punctured panel looks fine, how edges halve the R-value, and when the payback actually works.
R-Value Buys Back Gel Weight: A Trade You Can Actually Measure
Raising box R-value from 2.8 to 5.5 saves about 1.8 kg of gel per 44-hour shipment. How to measure the trade, and the overcooling failure it can cause.
