Harken 7801 4-Point Storage System - 60 lb - Manual (Page 7)

7
DIAGRAM 4. Mark center-to-center distance between rafters on mounting boards. Attach mounting boards to rafters.
Top
view
Rafters
Rafter
center-to-center
distance
Rafter
center-to-center
distance
Rafter
center-to-center
distance
Mounting
boards
STEP 2: INSTALL MOUNTING BOARDS; RAFTERS RUNNING FRONT-TO-BACK
A. DRILL CEILING RAFTER ATTACHMENT POINTS
LOCATE CEILING RAFTERS
Mounting boards must attach to ceiling rafters
(Diagram 4). On finished ceilings, locate rafters
using stud finder. Follow manufacturer's instructions.
Mark center of ceiling rafters. Drill 7 /
32
" (5.5 mm)
holes in a straight line square to the rafters.
See Diagram 4 below.
Always wear safety glasses.
B. DRILL MOUNTING BOARD
Measure center-to-center distance between 7 /
32
"
(5.5 mm) rafter holes. Mark distance on mounting
boards. Mark drill points in the center of board. Drill
5 /
16
" (8 mm) holes completely through the mounting
boards. See Diagram 4A below.
C. ATTACH MOUNTING BOARDS TO CEILING
Attach mounting boards using 5 /
16
" (8 mm)
lag bolts and washers (not included).
Do not overtighten.
5 /
16
" (8 mm) clearance hole in 2" x 6" mounting board
7 /
32
" (5.5 mm) hole in rafter
DIAGRAM 4A.
SIDE VIEW
VIEWED FROM BELOW