All Interfit Pro Softboxes are Heat resistant up to 400 degrees "C" or 752 degrees "F" Manufactured only from the very best materials. These Square softboxes are Standard equipment with Stellar Halogen 1000 & 1300 Kits. The Square Softbox is the most commonly used the world over as its a good all round softbox for general usage. Maximum Light loss=1 stop with both baffles inserted. except SSBR100 which is 1.2 stops.
Don’t forget to order the Speedring.