45-4545 IS A 45MM X 45MM METRIC 45 SERIES SQUARE T-SLOT PROFILE WITH FOUR OPEN T-SLOTS, ONE ON EACH 45MM FACE. THE PROFILE IS SMOOTH, WHICH MAKES IT RESISTANT TO DIRT AND DEBR IS BUILDUP WHILE ALSO BEING EASY TO CLEAN. THE 45-4545 PROFILE IS COMPATIBLE WITH ALL 45 SERIES FASTENERS. THIS PROFILE LENDS ITSELF TO CLEAN ROOM APPLICATIONS, GUARDS, ENCLOSURES, OR WORK STATIONS. THE FOUR OPEN T-SLOTS ENABLE ACCESS FROM ANY DIRECTION AND ARE USEFUL FOR MOUNTING ACCESSORIES.,