Boom and counter boom of the crane 2.13 Trolleys for the movement of the load m 1 and counterweight m2. The trolley shown in Fig. 13, consists of a chassis or metal base and four wheels which are to move into two rails. The rails that belong to the boom are longer than those of the counter boom.
Water easily passes though this EZ-Dry polyurethane foam. * Outdoor furniture such as seat and back cushions and mattresses. * Boat or marine cushions, golf carts, pool, patio or grading cushions. * Can also be used under Phifertex material and for filtering or padding whatever is exposed to large amounts of water.
Common Uses: Sofa cushions, bay window cushions, benches, chairs, and mattresses. Click Here For Foam Specs. This foam grade is firm high density foam. This type of foam is recommended for car seat pads, church pews, bay window seat cushions, dining room chairs, chair pads and massage tables 4 thick or thinner. If you are looking for support and durability, then this foam is for you.