ACH Modular Walls vs Freezer Panels


Modular walls and freezer panels are both commonly used in the construction of cleanrooms and other controlled environments, but they have some key differences.

Freezer panels, also known as IMP walls, are typically made from a single piece of high-density polyurethane foam insulation sandwiched between two layers of metal or other durable material. Freezer panels are designed to be used in the construction of refrigeration or freezer units and are typically thicker and more heavy-duty than modular walls. In addition, they are designed to withstand extreme cold temperatures and are often used in commercial or industrial applications where temperature control is critical.

On the other hand, modular walls are typically constructed from rigid foam insulation panels that are sandwiched between two layers of sheet metal or other durable material. The panels are designed to interlock and can be assembled quickly to create a flexible, modular wall system. Thus, modular walls are lightweight, easy to install, and can be customized to fit a variety of room sizes and shapes.

Here are some of the specifications and features of the modular walls manufactured by ACH:


  • Quick, modular and lightweight construction
  • Face material –20G – Galvanized Metal, Aluminium, SS, HPL, back-painted glass, uPVC
  • Core material (Insulation) – PUF, PUR, Rockwool, Aluminium Honey comb
  • Height – standard 10ft height, max 30ft with joints


  • True modular concept – no screws or anchoring required
  • Aluminum profiles used for bottom and top support (No C-Channel installation)
  • Demountable easy to re-locate the modules or component
  • Post-cap fitting for easy access to cabling and other utilities on ceiling
  • Pre-fabricated cut-out for utilities – lights, HEPA, utility lines, electrical plug (saving onsite time)
  • Future expansion compatibility – unique intermediate locking system allows for effortless adding or removing of panels

GMP Compliance

  • Flush smooth surface, coving for wall to wall, or wall to ceiling
  • Fully enclosed panel, no insulation exposed – eliminates humidity moisture soaking in insulation issue which prevents micro-growth inside the panel
  • Fully compatible with chemicals used for cleaning and sanitizing

Maintenance / Repair

  • Zero maintenance – 100% repairable in position
  • Replaceable panels and other accessories
  • Local expert’s team available upon request

Panel Conformance

  • ASTM Fire Spread rating (FSI) – Class 1
  • CAN/ULC S102 Fire Spread rating – PASS
  • UL 723 – PASS
  • ASTM E72 Wall compression load bearing –20,000 LB
  • Celling Load Bearing – More than 50 psf
ACH Modular Wall vs Freeze Panel


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