Ideal for accessing ceiling plenums, interstitial spaces or wall chases, Arcoplast double wall access panels are available sizes:

•  16” x 21” 
• 16” x 40”
• 21” x 21”

Features:

• Integrated surface frame and rubber door gasket.
• Double wall door construction
• Orcas® stainless steel slam latch
• Molded in high-gloss weatherable-capped ABS plastic
• Hidden fasteners and patented hinges

Access Door Pictures: 

Arcoplast Access Doors

Double Wall Construction & Latch