Door assemblies and methods of installing the same

A door assembly, comprising:

• a frame assembly comprising two jambs and a frame header, each jamb comprising a top end and a bottom end, wherein the frame header is coupled to the two jambs at each of the top ends thereof, and wherein each jamb defines at least a central jacking block notch and outer jacking block notch at each of the bottom ends;
• a plurality of jacking blocks, wherein each jacking block comprises a jamb side and a door side opposite the jamb side, wherein the jamb side of each jacking block is received within each of the notches;
• a temporary spreader bar coupled to the door side of each jacking block;
• a seal retainer cover removably coupled to one of the jambs;
• a threshold defining a thickness, wherein the threshold is partially disposed below the seal retainer cover along a vertical axis;
• and
• a door hingedly coupled to one of the jambs,
• wherein the seal retainer cover is removably coupled to the frame assembly such that the seal retainer cover and the plurality of jacking blocks restrict a lateral movement of the threshold, and
• wherein each jamb is grounded via a cable coupled to the jamb,
• wherein the threshold and frame assembly form a sound-proof seal around a perimeter of the door when the door is closed,
• wherein the door assembly shields an enclosure from radio frequency interference when the door is closed;
• and
• wherein the door is disposed on the enclosure to allow ingress and egress from the enclosure.

A method of installing a sound-proof door assembly, comprising:

• positioning a frame assembly within a rough opening of a wall, the frame assembly comprising:
• two jambs each comprising a top end and a bottom end;
• a frame header,
• wherein the frame header is coupled to the two jambs at each of the top ends thereof, and
• wherein each jamb defines at least a central jacking block notch and an outer jacking block notch at each of the bottom ends;
• aligning a plurality of jacking blocks coupled to a temporary spreader bar with the notches of each jamb, each jacking block comprising:
• a jamb side;
• and
• a door side opposite the jamb side,
• wherein the jamb side of each jacking block is received within each of the notches;
• removing the temporary spreader bar from each jacking block;
• installing a threshold in place of the temporary spreader bar;
• coupling a seal retainer cover to the frame assembly such that the threshold is partially disposed below the seal retainer cover along a vertical axis such that the seal retainer cover and the plurality of jacking blocks restrict a lateral movement of the threshold;
• securing the frame assembly to the wall by a fastening means;
• removing the seal retainer cover;
• and
• hingedly coupling a door to one of the jambs.