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Fire rated cavity closers in a range of sizes 

We stock Thermo-Loc TF Multi Cavity Closers here at Nationwide Supplies. Not only is this a highly respected brand known for its high quality products, but it also makes cavity closers which can be adapted to fit any space. 

First, choose from two sizes we have in stock - 50mm to 100mm, or 100mm to 150mm. During the installation, you can then trim the closer to the exact size you need. It’s a simple, on-site solution to deal with those ‘rogue’ cavity widths, and get a fully insulated, watertight finish. 

All of our cavity closers are fire rated and offer good thermal conductivity performance. They’re also highly durable and resistant to decay. What’s more, Thermo-Loc TF Multi Cavity Closers are compatible with almost all window types, including wood, aluminium and uPVC.

We sell cavity closers at a competitive price, delivered fast 

When you need to complete a window or door installation, you don’t want any delays in getting hold of all the supplies you need. Nor do you want to pay a fortune just to get good quality products.  

This is why at Nationwide Supplies, we offer top quality cavity closers at highly competitive prices. We also deliver fast, using our reliable and experienced delivery team. All you need to do is browse our site, place an order and we’ll do the rest. 

Looking for more solutions to insulate a property? Take a look at our huge selection of insulation products


Contact Us

Buttermilk Farm, Baldock Road
Buntingford, Herts, SG9 9RH ///party.duck.trending _____________________________ Ecotech Solutions Ltd t/a Nationwide Supplies (Reg: 0736 4771)

Telephone: 01763 281111
Fax: 01763 281307
Email: sales@nsupplies.co.uk