DI204 (4 Bars) 20" Front Width x 16 " Back Width 12" Deep - Clearance 2 1/2" 8 Lbs. Master Pack: 1 095192 138501 DI245 (shown) (5 Bars) 24" Front Width x 20" Back Width 12" Deep - Clearance 2 1/2" 9 Lbs. Master Pack: 1 095192 160953 DI307 (7 Bars) 30" Front Width x 26" Back Width 12" Deep - Clearance 2 1/2" 10 Lbs. Master Pack: 1 095192 161257