What is the air infiltration rating for 400 Series Stormwatch windows?
The uploaded performance document lists air infiltration values of less than 0.2 cfm/ft² for the listed 400 Series Stormwatch window configurations.
Why this matters
Air infiltration describes how much air can pass through a window assembly under standardized test conditions. Lower values generally indicate better resistance to drafts and unwanted air movement.
Structured claim
Claim ID: 400sw-air-001
Supported wording: Listed 400 Series Stormwatch configurations show air infiltration below 0.2 cfm/ft² in the source document.
Source: Page 2 performance tables.
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