Sunscreen thermal and frame assembly

A snap together sunscreen assembly adapted for installation in overlying relationship to an existing window comprising in combination,

• a unitary screen frame base formed by a top rail having an exterior edge and an interior edge, a side rail depending from said exterior edge, an angularly inclined holding arm portion depending from said side rail, said holding arm terminating in lower nose end, said nose end having first gripping means positioned along one surface thereof,
• a rib member depending from said interior edge of said top rail for a short distance, said rib member being spaced from said side rail thereby to form an interior chamber bounded by said top rail, side rail and depending rib member and being open along the bottom portion thereof,
• an outer lock rail extending along said interior edge of said top rail and having an undercut section extending along the length thereof,
• and a lock receiving foot extending laterally outwardly from said side rail in the direction of said interior edge of said top rail and positioned approximately intermediate said top rail and said lower nose end thereof,
• a unitary screen frame insert adapted for engagement with said screen frame base, said screen frame insert formed by a side support rail having a top edge and terminating in a lower nose end having second gripping means positioned along one surface thereof, said side support rail having an interior surface and an exterior surface,
• a locking rib extending angularly outwardly from said interior surface of said side support rail adjacent said top edge and adapted for mating engagement for said undercut section of said screen frame base,
• a locking foot extending laterally outwardly from said interior surface of said side support rail intermediate said top edge and said lower nose end thereof and adapted for mating engagement with said lock receiving foot of said screen frame base,
• each of said screen frame base and screen frame insert being elongate in configuration and adapted to be cut into equal top and bottom and equal side frame members and adapted for locking engagement therebetween thereby to form a rectangular frame,
• and a sunscreen panel interposed between said respective first and second gripping means of said respective lower nose ends of said screen frame base and screen frame insert and within said rectangular frame when fully assembled,
• whereby the rectangular frame may be constructed to fit any existing window on overlying relation by cutting each of said screen frame base and screen frame insert into equal top and bottom rails and equal side frame members, and lockingly engaging said members together with said sunscreen panel interposed therebetween.