Sealed Tight Solutions (or STS) make a simple offer, providing a complete range of quality, fully-tested intumescent, smoke and acoustic products. From their website:- 

"What makes us unique, is our range of consultation services to help fully-enable the most demanding design, build and test programmes.

Whether you manufacture door or doorsets or manage a joinery and/or carpentry company, you can harness our technical and practical knowhow. To ensure your assemblies comply with the latest legislative and regulatory standards call us NOW to discuss how we can streamline your product testing, design and build programmes. Save TIME. Save MONEY. 

For Timber Doors & Doorsets we offer a wide range of high performance, high-quality intumescent seals in both standard and non-standard sizes, colours and finishes. All products in our range are tested to both FD30 or FD60 integrity depending on the performance required."

STS have been working with Wood International Agency's door department since its inception. Our joint testing has always been the complex requirements where we know we are pushing boundaries, enabling our customers to have access to cost-effective solutions for a wide range of requirements. 

Sealed Tight Solutions is an Official WIA Development Partner.