RafterDeTTails are supplied in 6" increments starting at 12". The most common sizes are: 12", 18", 24", 30", and 36".

RafterDeTTails will also pitch-cut (AKA: slope-cut) the back, to make for easier and faster installations. This cut must be considered when calculating the effective length. We suggests you always calculate your slope length in order to be sure you order a long enough tail. The following diagram illustrates the difference between a square cut RafterDeTTail and one with a pitch cut. We also recommend you review your blocking scenarios.