A bulkhead assembly is provided for dividing a storage compartment into two or more sub-compartments. The bulkhead includes a peripheral seal member mounted at an edge of the bulkhead assembly for engagement with interior surfaces defining at least a portion of the storage compartment. Seals are constructed and configured so as to be reversible to provide a second sealing surface to replace the first sealing surface when it becomes worn or ineffective. The seals may be mounted to the panel assembly via mechanical fasteners permitting easy reversal of the seal members.
The present invention involves a selectively collapsible ladder which permits for adjusting the pitch of the steps between at least two pitches, one pitch being where the ladder collapsed for storage and another pitch whereby the steps are positioned for use by a user. The ladder includes a support structure comprising one or more support rails for extending between the ground and a loading or work surface or storage compartment. The steps are connected together by one or more links for effecting simultaneous movement of the steps. A stop mechanism is provided to releasably fix the step pitch relative to a support rail. The stop mechanism may include a ratchet mechanism that permits setting the pitch of the steps at one of several available pitch settings.