Container ceiling fitted with AirSponge AS-D segments

The three AirSponge formats: AS-C sticker (200 cm²), AS-B sticker (10 cm²) and AS-D roll (0.48 m²)

Container ceiling fitted with AS-D segments

Roll with no pre-cuts, segments cut to length · 8 cm × 12 m · 0.96 m²

So Sponge

AirSponge AS-D - anti-condensation SRD roll

new · ref. ASD-080x12-DSC-SA

€249 excl. VAT i.e. €20.75 / metre

Length: AS-D · 12 m roll

Secure Stripe payment — automatic VAT, instant PDF invoice. Larger volume or custom length? Request a quote (reply within 24 h).

As much material as 48 AS-C stickers, in segments you cut

Segments cut with scissors to the length you need

Key points

• Recommended for volumes above 100 L: cabinets, containers, shelters
• Same SRD material as AS-C, in a roll with no pre-cuts: you cut segments to the length you need
• SRD technology: self-regenerating, unlimited cycles
• 0 W · maintenance-free · -20 to +70 °C · REACH
• Double-sided pre-adhesive (3M): applies directly to the wall
• Made in France · 5-year warranty

Sizing

What length for your volume?

Enter the air volume to protect: the format, the quantity and the lot appear. It is a starting point, which the sizing tool refines for your climate and enclosure sealing.

Internal volume (litres)

Number of enclosures to equip

Refine with the sizing tool

Field proof

85 winter days inside an EV charging station

A 95 L IP54 station was fitted with 4 m of roll (two 2 m lengths), then compared with two identical control stations. Sensors logged temperature and humidity every 5 minutes, from 25 January to 20 April 2026.

÷ 2.6

time spent above 95% humidity

÷ 3

variability of internal humidity

0.54 → 0.02

correlation with outdoor humidity

Read the full study →·See other use cases →

Installation

Fitted in three steps

1
Cut
Cut a segment to the length you need with scissors. You can split the length into several segments.
2
Stick
Peel off the protective film and stick the segment on a clean, dry wall, the coldest one if possible.
3
Leave it
No power, no maintenance. The 5-year warranty still applies after cutting, for your own installation.

The three rolls

One metre of AS-D roll (800 cm²) equals 4 AS-C stickers of 200 cm². Start from the recommended surface for your volume, then divide it by 8 cm to get the length.

Roll	Material surface	AS-C equivalent	Price excl. VAT
6 m	0.48 m²	24 stickers	€169 (€28.17/m)
12 m	0.96 m²	48 stickers	€249 (€20.75/m)
24 m	1.92 m²	96 stickers	€389 (€16.21/m)

For a container or a volume in m³, the useful surface depends on sealing and climate: estimate it with the sizing tool or ask us for a sizing. From 10 to 100 L, the pre-cut AS-C sticker is simpler to install.

Technical specifications

Brand	So Sponge
Reference	ASD-080x06 / ASD-080x12 / ASD-080x24-DSC-SA
Material	Mesoporous alumina SRD (Self-Regenerating Desiccant)
Packaging	80 mm × 6 / 12 / 24 m rolls, no pre-cuts (segments cut to length), double-sided pre-adhesive (3M)
Useful capacity	×6 vs silica gel above 60% RH
Activation threshold	~60% RH
Regeneration	Spontaneous at room temperature · unlimited cycles
Power	0 W (passive)
Temperature range	-20 to +70 °C
Warranty	5 years (material or manufacturing defects) · maintained after cutting for your installation
Use	Volumes above 100 L · cut to length for your installation · repackaging and resale prohibited (terms of sale)
Lifespan	Unlimited · maintenance-free
Compliance	REACH
Manufacturing	France

Secure Stripe payment

Order online

AS-D · 6 m roll

80 mm × 6 m · 0.48 m²

€169 excl. VAT

AS-D · 12 m roll

80 mm × 12 m · 0.96 m²

€249 excl. VAT

AS-D · 24 m roll

80 mm × 24 m · 1.92 m²

€389 excl. VAT

Secure card payment (Stripe). VAT calculated automatically — enter your EU VAT number for reverse charge (EU outside France). PDF invoice issued automatically. Flat-rate shipping: €15 excl. VAT in Europe. Online orders are limited, per customer per day, to 3 rolls of 6 m and 1 roll of 12 m or 24 m; beyond that, on quotation.

Frequently asked questions

AS-C or AS-D: which one?

Same material, same width. AS-C, pre-cut into 25 × 8 cm stickers (200 cm²), is recommended from 10 to 100 L. Above 100 L, AS-D saves you from applying dozens of stickers: you cut segments of the length you need from the roll.

How is AS-D installed?

Cut a segment of the length you need with scissors, peel off the liner and stick it on a clean, dry wall of the volume to protect (inner wall of a container, back or door of a cabinet, ceiling of a charging station). You can apply several segments: the total surface is what counts.

How many metres do I need?

One metre of roll (800 cm²) equals 4 AS-C stickers. The recommended surface depends on volume, sealing and climate: estimate it with the AirSponge sizing tool, or ask us for a sizing.

Can I order more than the online limit?

Yes, on quotation: online orders are limited per customer per day to 3 rolls of 6 m and 1 roll of 12 or 24 m. For a larger volume or a custom length, request a quote: reply within 24 h.

How does AS-D work?

The mesoporous SRD material (Self-Regenerating Desiccant) captures water vapour above 60% RH and releases it when the air dries, with no energy and no maintenance. It buffers humidity instead of extracting it, which is why it does not saturate and lasts indefinitely. Learn more.