Window blind protector

A system comprising:

• a first panel positioned on a first side of a window frame and that includes a first inclined ledge having a first vertical sidewall;
• a second panel, the second panel positioned on a second side of the window frame and that includes a second inclined ledge having a second vertical sidewall;
• a retractably extensible tension rod that extends between the first vertical sidewall of the first panel and the second vertical sidewall of the second panel above the first inclined ledge and the second inclined ledge to tensionally brace the first panel and the second panel against the first side of the window frame and the second side of the window frame;
• and
• a retractable window blind that when lowered is diverted away from the window frame under the retractably extensible tension rod and via the first inclined ledge and the second inclined ledge,
• wherein the first vertical sidewall and the second vertical sidewall are configured to constrain the retractable window blind when lowered against lateral movement and wherein the retractably extensible tension rod is configured to at least partially limit vertical movement of the retractable window blind when lowered.