Fibreglass-core vacuum insulation panel

SilthermVacuPanel FG

A lightweight fibreglass-core vacuum panel for temperature-controlled systems that need low heat gain and more usable internal volume.

Grade 1 conductivity≤ 0.0025 W/mK
Service temperature-70 to +80°C
Thickness range5-50 mm
Maximum size1800 x 800 mm

Performance range

High thermal resistance in the space available.

VacuPanel FG is supplied as a finished vacuum-sealed panel in four conductivity grades. This gives designers a practical choice of performance and thickness.

01

Extend thermal hold time

Reduce heat ingress into temperature-controlled packages and storage systems.

02

Preserve usable capacity

Build high thermal resistance into a slim wall, door or enclosure construction.

03

Match the performance target

Select from four grades, thicknesses from 5-50 mm and dimensions up to 1800 x 800 mm.

Thermal conductivityTested at 25°C ± 2°C
Grade 1≤ 0.0025 W/mK
Grade 2≤ 0.005 W/mK
Grade 3≤ 0.008 W/mK
Grade 4≤ 0.012 W/mK

Choose the grade around the required thermal target, available space and complete assembly.

Application placement

See where the finished panel sits.

VacuPanel FG is installed as a thin, protected element within the thermal envelope, not as an exposed surface layer.

VacuPanel FG position
Within the insulated package wall around the payload cavity.
01

Temperature-controlled packaging

Protect medicines, vaccines and other temperature-sensitive contents inside compact shipping systems.

Open distribution context
Inside cabinet walls or doors, between the outer casing and inner liner.
02

Refrigeration and appliances

Increase thermal resistance in refrigerators, freezers, chill cabinets and other temperature-controlled equipment.

Within the protected thermal envelope around the low-temperature vessel.
03

LNG thermal containment

Help limit heat ingress into protected systems that maintain liquefied natural gas at low temperature.

Within the insulated enclosure wall surrounding the conditioned space.
04

Transport enclosures

Support cold-storage and cabin-comfort applications across marine, rail, automotive and aerospace systems.

Conceptual application sections. Panel layout, joints, edge protection and surrounding layers are matched to the complete system.

Technical documentation

Product data for design and specification.

Request the current product data to compare Grades 1-4 and coordinate conductivity, thickness, dimensions and service temperature with your application.

Controlled technical document

Siltherm VacuPanel FG

Siltherm VacuPanel FG Product Data Sheet / June 2025

Provide your professional details to request the current controlled copy. No project drawing or confidential design information is required.

Your request will be sent to the Siltherm team so a specialist can provide the current document and respond to relevant technical questions.

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Thermal CalculationEngineering support