Astro FRA Socket Box Insert
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UKCA marked and certified for UK markets
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Fire tested to BS EN 1366-3
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Fire ratings of EI30, EI60, EI90, and EI120
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Tested in single-layer, double-layer, 75mm+ and twin-wall fire/acoustic partitions
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Acoustically tested to limit air leakage
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Back-to-back tested for multiple applications
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Suitable for both plastic pattress boxes and metal back boxes
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Available in single & double sizes with 35mm and 47mm depths
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Tested with multiple cable penetrations
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Pre-formed for easy installation — no assembly or adhesives required
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Mess-free and maintenance-free installation
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Can be retrofitted
Product Description:
Astroflame FRA Socket Box Inserts are designed to maintain fire performance of partition walls when penetrated by steel or plastic electrical back boxes. Made from halogen-free, low smoke, fire-resistant mineral fibre, they offer up to 120 minutes of fire integrity and insulation depending on wall type. They also reduce air movement and sound passage, making them ideal for acoustic-rated walls.
PDS Product Data Sheet
TDS Technical Data Sheet
SDS Safety Data Sheet
Diagrams:
Double 35mm
Double 47mm
Single 35mm
Single 47mm
Shipping & Returns
WHY CHOOSE PREMIER?
40+ Years of Trust
With over 40 years of combined experience, our team has been trusted by domestic and commercial customers across the UK. We work with fully certified, highly skilled independent installers - including those with FIRAS and BM Trada credentials -to deliver fire door sets you can rely on. Every product and service is backed by decades of hands-on expertise and a commitment to high-quality results.
No Quibble Returns
We want you to feel 100% confident when ordering with us. That’s why we offer No Quibble Returns on all eligible items.
- Items must be in original packaging, and in the same condition you received them.
- Bespoke or made-to-order items are non-refundable.
- Simply email us at sales@activefiresafety.com to request your return.
- We’ll send you a return label and instructions - we make it easy.
- Refunds are processed once your item is received and approved.
For more information, visit our Refunds & Returns Policy
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When you contact us, you’ll speak to a real person who knows fire safety and actually wants to help.
Whether you’ve got questions before buying or need support after your order, we’re here every step of the way. No ticket numbers, no frustrating loops, just real answers.
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