Patent ID: 7980035

Claim:
A wall venting system for venting subterranean block walls, said venting system comprises: venting devices, wherein each venting device comprises a tubular vent body having an annular sealing flange on one end thereof and oppositely disposed beveled end, a plurality of thin flexible angular disposed independent sealing flanges in longitudinal parallel spaced relation to one another on one end of said vent body, said sealing flanges are angularly disposed in relation to the axis of said tubular body, a vent lattice mesh formed within an opening defined by said annular sealing flange, a gasket on said vent body registerable against said surface sealing flange, and adjustable tubular extension for said venting device having an area of reduced annular dimension, registered within said beveled end, an annular channel in said tubular extension defining, a cutting guide, said tubular venting body and said extension body member are of synthetic resin material; and said venting devices are placed in alternate blocks in each horizontal row of a subterranean block wall and in corresponding vertical alignment in alternating ascending horizontal rows of said subterranean block wall such that interior vertical venting passages of said blocks of said subterranean block wall are in communication with said venting devices.