Approved Vendor FS 200SS PG 60.00 Strut Channel Slotted, Steel, Pre Galvanized, 12 ga Gauge, 5 ft Overall Lg, Silver J5449XLBL Suitable for hazardous environments Suitable for hazardous environments Warmer Type Hand Warmer Activation Method Air Activated Heating Time Up to 10 hr Average Temperature 135 °F Number of Hand Warmers Included 40 Length 3 1 2 in Width 2 in Reusability Disposable For Use With Gloves Time to Reach Average Temperature 15 min to 30 min Country of Origin USA Overall Length 5 ft Material Steel Overall Height 1 5 8 in Overall Width 1 5 8 in Gauge 12 ga Slot Type Slotted Slot Spacing 2 in Slot Length 1 1 8 in Slot Width 9 16 in Hole Size 9 16 in x 1 1 8 in Hole Spacing 2 in Center to Center Overall Length 5 ft Load Capacity 660 lb Strut Channel Style Single Channel Type Slotted Color Silver Finish Pre Galvanized