4 Pack Procraft LHD004 Piezo Horn Driver 150 Watts RMS 1-3/8"-18 TPI Threads Medium Steel Pre-Punched 19C and have a 1/4" through

and have a 1/4" through hole

Great for prototypes

(10 PACK) RELIABLE HARDWARE A3020D Recessed Butterfly Latch with an Alignment Dowel for Racks/ Cases - ZINC FINISH

Quick connect terminals

PROCRAFT SRC-7U-12-TH 7U 12" DEEP Equipment Rack is made with 3/4" plywood (light-weight and very sturdy) with Rabbet joints that are screwed and glued for years of service

4 Pack Procraft LHD004 Piezo Horn Driver 150 Watts RMS 1-3/8"-18 TPI Threads Medium Steel Pre-Punched 19C and have a 1/4" through4 Pack Procraft Piezo horn driver, frequency is 3. 5K 20Khz, sensitivity is 93dB and 150 watts RMS. Screw on 1 3 8" 18 TPI threads. Dimensions are 4" diameter x 2 1 2" depth. Also available in singles and 4 packs.