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Zone 3 - Meets wind zones 1,2,and 3 in the International Building Codes for coastal states. Sustains winds from 120-140 mph within one mile of the coast and 130-140 mph greater than one mile from the coast. Design pressure approach 65 psf for negative loads. Stands up to wind-borne debris test; eight foot long 2 x 4 stud shot at 50 feet per second(34 mph). Tested against 4,500 positive and negative pressure cycles.

Zone 4 - Meets Dade County and Florida state versions of the International Building Codes, the strictest codes in the country . Sustains winds above 140 mph. Design pressure exceeds 65 psf for negative loads. Stand up to wind-borne debris test; eight foot long 2 x 4 stud shot at 50 feet per second (34 mph),multiple times. Tested against 4,500 positive and negative pressure cycles. Wood and Clad Casemaster IZ4.

Marvin Windows and Doors offers many products that meet the Impact Zone (IZ3) requirements and several that meet the IZ4 requirements.

Integrity Wood Ultrex's IMPACT series meets the IZ3 requirements

For more information, please contact your local Marvin dealer