GenInterlock SD-200A Generator Interlock Kit Breaker Panel 150/200 Amp Panels Square D QO and HomelineFeatures This is model fits both QO and Homeline 150 and 200 amp panels with this style main breaker The spacing between the bottom of the main and the first breaker on the right is 1 3 8? This fits indoor and outdoor panels with this spacing Please check the pictures to make sure it matches your panel What's in The Box Square D QO and Homeline 150 and 200 Amp Panels Owner's Manual Warranty 2 Year Limited Factory Warranty 30 Day Satisfaction