Aluminum Extension Ladders Sizes 16, 20, 24, 28, 32, 36 & 40 Foot Aluminum Extension Ladders Model: D1200-2 Style: Flat D-Rung Extension Ladder Features & Specifications Model: D1300-2 Style: Flat D-Rung Extension Ladder Features & Specifications Model: D1500-2/D1500-1 Style: Flat D-Rung Extension & Single Ladder Features & Specifications 48 Foot Aluminum Extension Ladders