Natural thermal cut window and door frame

Window and door frame (1) as any of the previous claims characterized in that said reinforcement means (8;

• 52) are at least partially obtained in single piece with said shaped portions (4, 5;
• 53, 54).

Window and door frame (1) as any of the claims from 5) to 9) characterized in that each of said tongues (9, 10;

• 55, 56) includes a U-bended stretch of said shaped portions (4, 5;
• 53, 54) so that said tongue (9, 10;
• 55, 56) are composed of two linear branches (13, 14) parallel and side by side each other.

Window and door frame (1) as any of the claims from 5) to 12) characterized in that said union means (6) comprise a plurality of spacing bushings (15) coated with plastic insulating material, each of which equipped with a first end (15a) firmly coupled with said inner surface (5a) of said second shaped portion (5;

• 54) of said section bars (2, 3;
• 51) and a second end (15b) coupled with said inner wall (4a) of said first shaped portion (4;
• 53).

Window and door frame (1) as any of the previous claims characterized that said shaped portions (4, 5;

• 53, 54) of said section bars (2, 3;
• 51) present a tubular profile substantially for the entire cross section.