Short answer: on clear glass in a typical 1 in. insulating unit they are close on center-of-glass numbers: visible light in the low-to-mid 60s %, SHGC around 0.27, and similarly low outdoor reflectance. On tinted or low-iron substrates the match is rougher, so compare like-for-like makeups.
The service rates matches (Close, Approximate, Not supported) from published data and flags renamed or discontinued products. It is a screening aid, not a substitution approval.
Connect your AI assistant to the free MCP endpoint https://glazing-mcp.glazingkb.workers.dev/mcp (no sign-in) and try:
"What is the Vitro equivalent of SunGuard SNX 62/27 on clear glass, and how close is it?"
The full answer comes from the cross_reference_glass tool, with section citations and confidence tags.
Setup steps: llms.txt.
Last reviewed 2026-10-02.