18x21 Rectangular Hatch - White - ASA Material Acrylonitrile Styrene Acrylate

Features:

• 1/2” Closed Height
• Weather-tight Seal
• Opens full 180 degrees
• Nothing to Snag Lines
• One Hand Operation
• Mounts Vertical or Horizontal
• UV Stabilized Material
• Invisible Fasteners
• Color: White
• Non-Skid Diamond Pattern Surface

Specifications:

• Dimensions OD: 18-1/8" x 20/1/2"
• Dimensions ID: 14-5/8" x 17" 
• Hole Cut: 15-3/8" x 17-3/8"