Security Never Looked So Good!. Invisi-Gard Security Screens offer unparalleled clarity of vision with enhanced security.. Product: Door Locks, Doors, Gates, Screens, Window Locks, Window Screens. Service: Installation. Kind: External, Internal. Type: Commercial, Industrial, Residential. Brand: Alspec, Invisi-Gard. Material: Aluminium, Stainless Steel Mesh. Place: Commercial Applications, Homes, Offices, Patios, Pools, Renovated Homes. Assurance: Standards Australia, Warranties