Filter Subscription For Sterra Nova from $35.00 $32.00 /per or 4x $8.75 w/ or 3x $11.66 w/ Super Sale! ending in: Get air filter replacement for your Sterra Nova every 6 months. The most convenient way to change your filter. This is a filter delivery subscription for your Sterra Nova. You are billed automatically every 6 months Product variants Default Title Add to Cart Couldn't load pickup availability Refresh