{"product_id":"internal-joist-mount-cma385","title":"Internal Joist Mount","description":"\u003cp\u003eThe Chief CMA385 is an internal joist mount designed to bridge ceiling joists in professional AV installations. This accessory expands to accommodate joist spacing ranging from 16\" to 23\" (254–584 mm) centers. It features an adjustable clamping bracket that includes a threaded fitting, specifically engineered to accept a 1.5\" NPT threaded extension column. With a weight capacity of 300 lbs (136 kg), this mount provides a secure transition from the ceiling structure to a vertical extension column. The unit has an overall dimension profile of 4.1\" x 4.5\" x 22.7\" (105 x 114 x 577 mm) and is TAA compliant for government and enterprise projects requiring specific sourcing standards.\u003c\/p\u003e\u003ch2\u003eKey features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBridges ceiling joists on 16\"-23\" (254–584 mm) centers\u003c\/li\u003e\n\u003cli\u003e300 lbs (136 kg) weight capacity\u003c\/li\u003e\n\u003cli\u003eAdjustable clamping bracket with 1.5\" NPT threaded fitting to accept extension columns\u003c\/li\u003e\n\u003cli\u003eTAA compliant for specialized procurement requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuestions\u003c\/h2\u003e\u003ch3\u003eWill the CMA385 work with my existing ceiling extension column?\u003c\/h3\u003e\u003cp\u003eThe CMA385 features a 1.5\" NPT threaded fitting specifically to accept a 1.5\" NPT threaded extension column.\u003c\/p\u003e\u003ch3\u003eWhat joist spacing can the CMA385 bridge?\u003c\/h3\u003e\u003cp\u003eThis mount is designed to bridge ceiling joists with centers ranging from 16\" to 23\" (254–584 mm).\u003c\/p\u003e\u003ch3\u003eHow much weight can this joist mount support?\u003c\/h3\u003e\u003cp\u003eThe CMA385 has a maximum weight capacity of 300 lbs (136 kg).\u003c\/p\u003e\u003ch3\u003eIs the CMA385 TAA compliant?\u003c\/h3\u003e\u003cp\u003eYes, this product is TAA compliant for projects requiring adherence to the Trade Agreements Act.\u003c\/p\u003e\u003ch3\u003eWhat dimension is the CMA385 extension range?\u003c\/h3\u003e\u003cp\u003eThe extension range for this mount is 14.1\" - 22.75\" (35.81cm - 57.79cm).\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSpecifications are supplied by the manufacturer. For complete details, check the Resources tab.\u003c\/em\u003e\u003c\/p\u003e","brand":"Chief","offers":[{"title":"Default Title","offer_id":51914940317974,"sku":"CMA385","price":135.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/3437\/6982\/files\/CMA385_large_ab441a0c-c1b3-4508-9dcf-4a2216f3cf59.jpg?v=1789974148","url":"https:\/\/avsupplies.us\/products\/internal-joist-mount-cma385","provider":"AV Supplies","version":"1.0","type":"link"}