YOW 225/225 H Mullion Design Pressures Frame Width "B" Frame Width "A" Mullion Span Tributary Width is determined by the following: (Frame Width "A" + Frame Width "B") / 2 Refer to Florida Product Approvals for anchoring details and additional information. Notes: 1.) Design pressures are limited either by mullion or anchor screw capacity. 2.) Refer to Florida Product Approvals or Engineer of Record for minimum anchor requirements. 3.) Design pressures values apply to mullion where two or more windows are listed in a single opening. Lesser design of individual window or mullion of installation shall govern. E9-4527 Clipped Stacking Mullion Design Pressure Chart Maximum Design Pressure Capacity (PSF) +/- (Up to and including Florida's HVHZ - Impact) Used on YOW 225 / YOW 225 H Tributary Width [Inches] - Frame Mull Span [Inches] 12 18 24 36 42 48 56 60 35 150.0 148.9 126.3 113.8 113.8 113.8 113.8 113.8 48 138.3 99.3 80.7 64.5 61.5 60.5 60.5 60.5 54 121.0 86.1 69.2 53.8 50.3 48.4 47.8 47.8 62 103.7 73.1 58.1 44.0 40.5 38.2 36.6 36.3 See notes 1, 2, and 3. E9-4527 Unclipped Stacking Mullion Design Pressure Chart Maximum Design Pressure Capacity (PSF) +/- (Up to and including Florida's HVHZ - Impact) Used on YOW 225 / YOW 225 H Tributary Width [Inches] - Frame Mull Span [Inches] 12 18 24 36 42 48 56 60 35 150.0 150.0 150.0 150.0 150.0 150.0 150.0 150.0 48 150.0 150.0 150.0 133.7 125.1 122.3 122.3 122.3 54 150.0 150.0 137.9 100.8 92.2 87.4 85.9 85.9 62 150.0 134.0 102.8 73.4 65.9 61.0 57.5 56.8 See notes 1, 2, and 3. Page-56 05-1002-10 | Effective Date: October 1, 2020