Fronius Insulation Ring Ø20.5 / Ø12.15 (42,0100,1429) (5 Pack) Fronius Sale! from 5500 /per Qty. Add to Cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. SKU:FRP 42,0100,1429,5