Profile: JML Hardware is a designer and supplier of aluminum extrusions and enclosures. Our products include gas & electric meter boxes, submersible lids, kitchen repair plates, lift off hinges repair plates, air brick extraction fan covers, door protectors, galvanized pipe protectors and door lock protectors. Our air brick cover prevents the full force of wind or rain directly penetrating into the dwelling, which can cause extensive damage to plasterwork & decoration and discomfort for the tenant.