Heavy Duty 7 Leg System Provides Excellent All Glide Support. No-Flex 2" High Side Rail Is 1/2" Thicker Than Standard For Side Rail Support That Prevents Edge Sagging. Secure Glide-Fit, Full Spectrum Double Angle Steel Center Support Rail Provides Maximum Support In The Center Of The Bed. 3 Heavy-Duty Center Legs With Steel Shaft Glides Prevent Center Bed Sagging. Matching Brown Linen Protector End Caps. Limited Lifetime Warranty. Adjusts To Fit All Sizes