Patent ID: 8336833
Filing Date: 2012-12-25
Classification: E04G,F16L

Abstract:
1. A modular grid system comprising at least two modular grids, wherein each modular grid comprises: a. an outer frame; b. an outer partial ring positioned inside of and coupled to the outer frame, wherein the outer partial ring forms an arc of greater than 180 degrees but less than 360 degrees, the outer partial ring having a radius; and c. at least one inner partial ring positioned inside of and coupled to the outer partial ring via at least one securable connection, wherein the at least one inner partial ring forms an arc of greater than 180 degrees but less than 360 degrees, the inner partial ring having a radius that is shorter than the radius of the outer partial ring; wherein the outer partial ring and the inner partial ring are each configured to snap fit to an aperture forming device having a corresponding radius by surrounding more than one-half of a circumference of the aperture forming device.