These positive-locking controls are available with white, black, or blue knob or T-handle style in black or aluminum. Complete part number with -W for white, -B for black knob, -BU for blue knob, -TB for t-handle black or -TA for T-handle aluminum. Special length controls are available at price for next longer control + $1.45 per foot + $20 set-up charge for controls up to 10 feet, $40.00 for controls over 10 feet.