FrameFit the only fire door gap remedial solution on the market. Large gaps around a fire door deems the door uncompliant, up to now the only remedy is to re-lip (of which not all doors can be re-lipped), take the architrave off and try and close the frame. Failing this, its a new door costing hundreds of pounds. FrameFit is quick and easy, fully tested to BS EN standards. Contact us for further information: cfp.ltd@hotmail.com