The Corona Renderer 6 For 3ds Max1-Year Maint. Subscription Renewal lets you access daily builds, monthly builds, and any major versions released when the subscription is active. It can be bought only as a Renewal of your Corona Render 6 For 3ds Max - Box License with Subscription. It is valid for 12 months. You can use any Corona version released during your active subscription even if you let the subscription expire.