WDMA 64x96 Door (5ft4in by 8ft) Exterior Knotty Alder 96in Double 1 Panel 2/3 Lite Charleston Door 40x40 What’s the quality grade of

What’s the quality grade of the steel structure components

7) Surface: Hot dip galvanized or painted

and has a heat insulation

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has more than 15 patents

WDMA 64x96 Door (5ft4in by 8ft) Exterior Knotty Alder 96in Double 1 Panel 2/3 Lite Charleston Door 40x40 What’s the quality grade ofSKU:: DOORSIZE 64x96 19501 Brand:: WDMA Approvals:: WBD Windload Resistant, Non Impact Doors (Shutter Required) Condition:: NEW Door Model:: Charleston Application:: Exterior DP Rating::+31. 6 psf 34. 6 psf Grain Texture Pattern:: Knotty Alder Fibercraft Door Construction:: Premium Lead Time (business days):: Slab Doors: 10 business days , Prehung: 2 3 weeks; Pre finished: add 1 2 weeks Material:: Fiberglass Pick up Location Zip Code:: No pick up