Abstract: A solar collector device for collecting and utilizing solar heat in conjunction with a solar heat distribution system comprising an elongated housing having a bottom wall, spaced opposed side walls, and first and second opposed end walls, a first glazing member mounted closing the top portion of the housing and adaptable to transmit solar radiation therethrough, a second glazing member disposed in the housing inwardly of the first glazing member forming an air space therebetween, at least one absorber plate member disposed between the second glazing member and the bottom wall of the housing having inlet and outlet manifolds and passageways therebetween through which a heat transfer medium can flow, system conduit members connected to the inlet and outlet manifolds, an opening in at least one of the end walls for accommodating the system conduit members, first and second closure members attachable respectively to the first and second opposed end walls forming an enclosed space at each respective end of the hou